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Journal articles on the topic 'Geochemical evolution'

Author: Grafiati

Published: 4 June 2021

Last updated: 8 February 2022

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1

Khaustov, Aleksandr, and Margarita Redina. "Geochemical barriers as structural components of the geochemical systems evolution." E3S Web of Conferences 98 (2019): 01026. http://dx.doi.org/10.1051/e3sconf/20199801026.

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The term “geochemical barrier” (GCB) has been widely used in the Russian geochemical literature as a key concept of the distribution of elements and substances theory (incl. pollutions)although in the world research practice this term is not particularly represented. The assessment of the functional role of the geochemical barriers in relation to the properties and evolution of the geochemical systems (GCS)is demonstrated.The foundations of Haken synergy, the foundations of self-organization of systems and non-equilibrium (non-linear) thermodynamics of I. Prigogine and his school are used as a methodological framework. From the authors’ point of view, GCB are considered as self-organizing components of GCS, in which physical and chemical processes are activated, leading to the transformation of atomic and molecular structures, chemical associations and individual chemical elements under the impact of active media (processes). They can be the defining phenomenon of the emergence and evolution of GCS. The concept of geochemical barriers is the foundation for technologies that are actively implemented for cleaning and protecting soils, groundwater and surface water, and the geological environment in general.

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2

Koukouzas, N., and E. Davis. "Geochemical evolution of Aegean perlites emphasizing the example of Kos island." Neues Jahrbuch für Geologie und Paläontologie - Monatshefte 1998, no. 11 (November 10, 1998): 641–50. http://dx.doi.org/10.1127/njgpm/1998/1998/641.

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3

Kumar, Naresh, and Naveen Kumar. "Geochemistry of volcanic flows of Nakora area of Malani igneous suite, Northwestern India: Constraints on magmatic evolution and petrogenesis." International Journal of Engineering, Science and Technology 12, no. 1 (April 30, 2020): 66–82. http://dx.doi.org/10.4314/ijest.v12i1.6.

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The geochemical characteristics of volcanic flows of Nakora area of Malani Igneous Suite have been determined to understand their magmatic evolution and petro-genetic aspects. Geochemically, they are high in silica, total alkalis, high field strength elements (HFSE), low ion lithophile elements (LILE), rare metals and rare earth elements; represent A-type affinity with potential mineralization associations. Here, we carried out average geochemical data bank of representative samples of 44 individual lava flows of isolated hill-locks. The relative enrichment of trace elements and negative anomalies of Sr, Eu, P and Ti in the multi-element spider diagrams suggests that the emplacement of the lava flows was controlled by complex magmatic processes i.e. fractional crystallization, partial melting, magma mixing, crustal contamination and assimilation. Moreover, NRCmagma provides new geochemical approaches to understand geodynamic evolution of MIS and emplaced in plume related extensional geodynamic settings in NW Indian shield. Keywords: Geochemistry; Volcanic flows; Nakora; Malani Igneous Suite; Rajasthan; Rodina

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4

Lanphere, Marvin A., and Frederick A. Frey. "Geochemical evolution of Kohala Volcano, Hawaii." Contributions to Mineralogy and Petrology 95, no. 1 (1987): 100–113. http://dx.doi.org/10.1007/bf00518033.

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5

Jelsma, Hielke A., Jens K. Becker, and Siegfried Siegesmund. "Geochemical characteristics and tectonomagmatic evolution of late Archean granitoids from northern Zimbabwe." Zeitschrift der Deutschen Geologischen Gesellschaft 152, no. 2-4 (December 11, 2001): 199–225. http://dx.doi.org/10.1127/zdgg/152/2001/199.

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6

Saghatelyan, A. K., L. V. Sahakyan, O. A. Belyaeva, G. O. Tepanosyan, and D. A. Pipoyan. "EVOLUTION OF ECOLOGO-GEOCHEMICAL INVESTIGATIONS IN ARMENIA." Izvestiya Rossiiskoi Akademii Nauk. Seriya Geograficheskaya., no. 4 (January 1, 2016): 119–27. http://dx.doi.org/10.15356/0373-2444-2016-4-119-127.

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7

Edmunds, W. M., J. J. Carrillo-Rivera, and A. Cardona. "Geochemical evolution of groundwater beneath Mexico City." Journal of Hydrology 258, no. 1-4 (February 2002): 1–24. http://dx.doi.org/10.1016/s0022-1694(01)00461-9.

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8

Taylor, Stuart Ross, and Scott M. McLennan. "The geochemical evolution of the continental crust." Reviews of Geophysics 33, no. 2 (1995): 241. http://dx.doi.org/10.1029/95rg00262.

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9

Sushchevskaya, N. M., V. S. Kamenetsky, B. V. Belyatsky, and A. V. Artamonov. "Geochemical evolution of Indian Ocean basaltic magmatism." Geochemistry International 51, no. 8 (August 2013): 599–622. http://dx.doi.org/10.1134/s0016702913070057.

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10

Carlson, Richard W. "Geochemical evolution of the crust and mantle." Reviews of Geophysics 25, no. 5 (1987): 1011. http://dx.doi.org/10.1029/rg025i005p01011.

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11

Smith, J. V. "Geochemical Influences on Life's Origins and Evolution." Elements 1, no. 3 (June 1, 2005): 151–56. http://dx.doi.org/10.2113/gselements.1.3.151.

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12

Shin, Seong-Cheon. "Technical evolution of geochemical mapping in Korea." Journal of the geological society of Korea 50, no. 5 (October 31, 2014): 565. http://dx.doi.org/10.14770/jgsk.2014.50.5.565.

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13

Dostal, Jaroslav, and Michael Durning. "Geochemical constraints on the origin and evolution of early Mesozoic dikes in Atlantic Canada." European Journal of Mineralogy 10, no. 1 (January 26, 1998): 79–94. http://dx.doi.org/10.1127/ejm/10/1/0079.

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14

Garcia, M. O., D. J. P. Foss, H. B. West, and J. J. Mahoney. "Geochemical and Isotopic Evolution of Loihi Volcano, Hawaii." Journal of Petrology 37, no. 3 (1996): 729. http://dx.doi.org/10.1093/petrology/37.3.729.

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15

Duncan, Robert A., Martin R. Fisk, William M. White, and Roger L. Nielsen. "Tahiti: Geochemical evolution of a French Polynesian Volcano." Journal of Geophysical Research: Solid Earth 99, B12 (December 10, 1994): 24341–57. http://dx.doi.org/10.1029/94jb00991.

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16

Higgins, Michael Denis. "Geochemical evolution of the Chatham–Grenville stock, Quebec." Canadian Journal of Earth Sciences 22, no. 6 (June 1, 1985): 872–80. http://dx.doi.org/10.1139/e85-091.

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The Chatham–Grenville stock is an anorogenic multiple intrusion that shows a complete gradation from early cumulate and noncumulate syenites to slightly peralkaline granites. It can be divided into four units. Unit 1, the first unit, is a noncumulate syenite with modal quartz less than 5%. Unit 2 has a wide range in composition from cumulate syenites (no modal quartz) to noncumulate syenites and quartz syenites (modal quartz = 20%). Units 3 and 4 are granites with modal quartz up to 25 and 30%, respectively. The parental magma of the whole complex was syenitic. Differentiation occurred as a result of crystal fractionation by filter pressing both at depth and in situ. Ba, Sr, Rb, and Eu abundances and major-element mass-balance calculations show that alkali feldspar, mafic minerals, and apatite were fractionated. At least 79% fractionation is necessary to transform the mean composition of the first unit (1) into the mean composition of the last unit (4). The rare-earth elements, Th, Ta, Hf, and Zr, did not behave in a residual fashion but may have been fractionated in minor accessory phases such as apatite, zircon, monazite, allanite, and xenotime.

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17

Jones, Blair F., David L. Naftz, Ronald J. Spencer, and Charles G. Oviatt. "Geochemical Evolution of Great Salt Lake, Utah, USA." Aquatic Geochemistry 15, no. 1-2 (December 2, 2008): 95–121. http://dx.doi.org/10.1007/s10498-008-9047-y.

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18

J.J., Movlanov, and S. M. Koloskova. "Main Features Of The Geodynamic Evolution Of Domesozoic Formations And Metallogenic Zoning Of Endogenous Gold Mineralization Of The Tien-Shan Origenic Vein System." American Journal of Applied Sciences 02, no. 10 (October 31, 2020): 70–82. http://dx.doi.org/10.37547/tajas/volume02issue10-12.

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Geochemical testing covered the entire territory of Uzbekistan, but with varying degrees of detail. Most, 85-88% of the republic's area is covered with Mesozoic and Cenozoic sediments, with which exogenous deposits are associated. Pre-Mesozoic formations - the environment of localization of endogenous deposits, confined to the mountain systems of the Median and South Tien Shan. Mountain heights with outcrops of Pre-Mesozoic rocks occupy about 12-15% in area, the rest is in semi-closed and closed territories. Primary halos are recorded on the surface and at depth, secondary ones on the surface, as well as near it: below the raft - in water, above - in the surface atmosphere. Improving forecasting efficiency in regional geochemical works, interpretation and assessment of different-rank ore-generating geochemical anomalies in complex landscape-geological conditions.

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19

Lalnunmawia, Jimmy, Malsawmtluangkima Hauhnar, Orizen MS Dawngliana, Shiva Kumar, and C. Zoramthara. "Geochemical Appraisal on History and Evolution of Barail Sandstones of Zote-Ngur, Champhai District, Mizoram, India." Science & Technology Journal 9, no. 1 (January 1, 2021): 41–48. http://dx.doi.org/10.22232/stj.2021.09.01.8.

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Mizoram is part of Surma basin which later evolved into the present state of geological terrain due to Indo- Myanmar tectonic collision during the Oligocene period. The present work deals with geochemical characteristics of Barail sandstones exposed in Champhai area of eastern region in Mizoram. The major/minor oxides, trace elements and rare earth elements data are used to infer the geological history and evolution of the sandstone in the study area of Champhai. The petrographic study shows the presence of various detrital grains like quartz, lithic fragments, feldspar, chertz, mica, etc., which are cemented by siliceous and ferruginous materials. Geochemically, the sandstones indicate high wt% of SiO2, Al2O3 and MgO compared to Upper Continental Crust (UCC) while rest of the major oxides indicate low concentrations. The geochemical classification indicated the sandstones as litharenite and wacke. The chondrite normalised REE pattern shows the enrichment of HREE and depletion of LREE with negative Eu anomaly. The value of Eu/Eu*, La/Lu, La/Co, Th/Sc, Th/Co, Cr/Th and high ratio of LREE/HREE of Barail sandstone suggest felsic source rock. The analysis of paleoweathering history indicated moderate to intensive weathering in the provenance. Various tectonic discriminant function diagrams suggested Active Continental Margin settings.

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20

Selby, David, Robert A. Creaser, and Bruce E. Nesbitt. "Major and trace element compositions and Sr-Nd-Pb systematics of crystalline rocks from the Dawson Range, Yukon, Canada." Canadian Journal of Earth Sciences 36, no. 9 (September 1, 1999): 1463–81. http://dx.doi.org/10.1139/e99-058.

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Geochemical (major, trace, and rare earth elements) and isotopic (Nd, Sr, and Pb) data of the Devono-Mississippian Wolverine Creek Metamorphic Suite, mid-Cretaceous Dawson Range batholith, mid-Cretaceous Casino Plutonic Suite, and Late Cretaceous plutons provide new information on the origin and evolution of the rocks from the Dawson Range in west-central Yukon, northern Canadian Cordillera. Isotopic and other geochemical data for the Wolverine Creek Metamorphic Suite metasedimentary rocks indicate that the detrital components were derived from two distinct provenances: (1) the North America craton, which contributed evolved felsic, upper crustal material; and (2) a calc-alkaline arc, which shed juvenile mafic-intermediate material. The geochemical affinity of the metaigneous rocks indicates that the Yukon-Tanana terrane represented a continental arc during Devonian-Mississippian times, with magmas derived from geochemically primitive sources and partial melting of the Yukon-Tanana terrane supracrustal rocks. The Dawson Range batholith likely represents crustally derived magmas from the Yukon-Tanana terrane during the mid-Cretaceous, with the contemporaneous Casino Plutonic Suite representing a late-stage fractionate of these magmas. The Late Cretaceous porphyry Cu mineralization is genetically related to plutons derived from mantle-source magmas related to active subduction.

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21

Yergina, Olena. "Changes in geochemical indicators of modern soil formation in Crimea." Visnyk of the Lviv University. Series Geography, no. 44 (November 28, 2013): 114–21. http://dx.doi.org/10.30970/vgg.2013.44.1209.

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In the article calculated and analyzed geochemical indicators that can be used to study the genesis and evolution of soils. The features of the changes in the coefficient eluviation, geochemical factors CIW and CIA, the coefficients of soil salinity of different ages in time, which were formed in the present conditions in Heracleian Peninsula, are studied. Key words: geochemical factors, chronosequence, lithogeochemical indices, the coefficients of weathering.

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22

Paone, A. "The geochemical evolution of the Mt. Somma-Vesuvius volcano." Mineralogy and Petrology 87, no. 1-2 (April 20, 2006): 53–80. http://dx.doi.org/10.1007/s00710-005-0103-7.

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23

Foden, John, Suck Hwan Song, Simon Turner, Marlina Elburg, P. B. Smith, B. Van der Steldt, and D. Van Penglis. "Geochemical evolution of lithospheric mantle beneath S.E. South Australia." Chemical Geology 182, no. 2-4 (February 2002): 663–95. http://dx.doi.org/10.1016/s0009-2541(01)00347-3.

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24

Xuejing, XIE. "Geochemical Mapping-Evolution of Its Aims, Ideas and Technology." Acta Geologica Sinica - English Edition 82, no. 5 (September 7, 2010): 927–37. http://dx.doi.org/10.1111/j.1755-6724.2008.tb00648.x.

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25

Allen, D. M., and M. Suchy. "Geochemical evolution of groundwater on Saturna Island, British Columbia." Canadian Journal of Earth Sciences 38, no. 7 (July 1, 2001): 1059–80. http://dx.doi.org/10.1139/e01-007.

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A detailed geochemical study of surface waters, spring waters, and groundwaters was undertaken to examine the geochemical evolution of groundwater on Saturna Island, British Columbia. The purpose of the study was to characterize the nature and occurrence of saline waters and to provide insight on chemical processes that lead to salinization in the fractured sedimentary bedrock aquifers of this small island. Major ion chemistry shows that groundwater is recharged locally but mixes with saline waters that occur at depth or near the coast. Simple mixing is complicated by cation exchange (between calcium-rich waters and sodium-rich exchange sites offered by mudstone beds) and results in a spatially variable hydrochemical composition that is dependent on the island topography and geological framework (structural, sedimentological, and glacial), in combination with groundwater use patterns. Sodium, present at exchange sites, is speculated to be a remnant of ocean water intrusion during the Pleistocene, when the island was submerged. As a result of its high mobility and conservative nature, chloride (and sulphate) has been flushed from the shallow bedrock during a process of natural desalinization but may remain trapped in the pores and fractures at depth. Modern salt-water intrusion, brought about by increased development on the island, is now competing with natural desalinization along the coast and has left many drinking-water supplies contaminated.

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26

Cheng, Bin, Jing Zhao, Chupeng Yang, Yankuan Tian, and Zewen Liao. "Geochemical Evolution of Occluded Hydrocarbons inside Geomacromolecules: A Review." Energy & Fuels 31, no. 9 (August 22, 2017): 8823–32. http://dx.doi.org/10.1021/acs.energyfuels.7b00454.

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27

Kerr, A. C., R. W. Kent, B. A. Thomson, J. K. Seedhouse, and C. H. Donaldson. "Geochemical Evolution of the Tertiary Mull Volcano, Western Scotland." Journal of Petrology 40, no. 6 (June 1, 1999): 873–908. http://dx.doi.org/10.1093/petroj/40.6.873.

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28

Durrheim, Raymond J., and Walter D. Mooney. "Evolution of the Precambrian lithosphere: Seismological and geochemical constraints." Journal of Geophysical Research 99, B8 (1994): 15359. http://dx.doi.org/10.1029/94jb00138.

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29

Samsonov, A. V., and Yu O. Larionova. "Geochemical evolution of magmatism in Archean granite-greenstone terrains." Stratigraphy and Geological Correlation 14, no. 3 (May 2006): 225–39. http://dx.doi.org/10.1134/s0869593806030014.

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30

BAKER, P. E., A. GLEDHILL, P. K. HARVEY, and C. J. HAWKESWORTH. "Geochemical evolution of the Juan Fernandez Islands, SE Pacific." Journal of the Geological Society 144, no. 6 (November 1987): 933–44. http://dx.doi.org/10.1144/gsjgs.144.6.0933.

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31

Klügel, Andreas, Karsten Galipp, Kaj Hoernle, Folkmar Hauff, and Simon Groom. "Geochemical and Volcanological Evolution of La Palma, Canary Islands." Journal of Petrology 58, no. 6 (June 1, 2017): 1227–48. http://dx.doi.org/10.1093/petrology/egx052.

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32

Hawkesworth, C. J., M. A. Menzies, and P. van Calsteren. "Geochemical and tectonic evolution of the Damara Belt, Namibia." Geological Society, London, Special Publications 19, no. 1 (1986): 305–19. http://dx.doi.org/10.1144/gsl.sp.1986.019.01.17.

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33

Sousa, D. J. L., A. F. D. C. Varajão, and J. Yvon. "Geochemical evolution of the Capim River kaolin, Northern Brazil." Journal of Geochemical Exploration 88, no. 1-3 (January 2006): 329–31. http://dx.doi.org/10.1016/j.gexplo.2005.08.068.

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34

Linhoff, Benjamin S., Philip C. Bennett, Tamir Puntsag, and Ochir Gerel. "Geochemical evolution of uraniferous soda lakes in Eastern Mongolia." Environmental Earth Sciences 62, no. 1 (March 18, 2010): 171–83. http://dx.doi.org/10.1007/s12665-010-0512-8.

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35

Ramirez, J. A., and L. G. Menendez. "A geochemical study of two peraluminous granites from south-central Iberia: the Nisa-Albuquerque and Jalama batholiths." Mineralogical Magazine 63, no. 1 (February 1999): 85–104. http://dx.doi.org/10.1180/002646199548330.

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AbstractIn this paper we present new petrological and geochemical data for two peraluminous granite batholiths (Nisa Alburquerque and Jalama batholiths) representative of the ‘Araya-type’ granites of the Central-Iberian Zone. Both granites are composite with several facies (monzogranites and leucogranites) that can be grouped into two main granite units: the external units and central units. Intrusive relationships and lack of geochemical coherence between the central and external units indicate that they are not comagmatic but represent different pulses. The central units of both batholiths are petrologically and geochemically different. On the other hand, external units show a lot of similarities and are the main object of this study. The main characteristics of the external granites can be interpreted in terms of an incomplete fractional crystallization process of early mineral phases (plg + Kf + bt) which probably took place at the level of emplacement. Other possible mechanisms of magmatic differentiation (magma mixing, restite unmixing, sequential melting) can be discarded based on field, petrography and geochemical data. We propose that the ‘Araya-type’ granites are formed by the intrusion of distinct magma pulses (central and external). Further evolution within each pulse can be due to incomplete fractional crystallization possibly taking place at the emplacement level.

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36

Nlomngan, Jean Paul Sep, Joseph Penaye, Rigobert Tchameni, Sebastien Owona, Augustin Patrice Moussango Ibohn, Emmanuel N. Nsifa, and Toteu Sadrack Félix. "Geochemical Characterization of Boula Ibi Granitoids and Implications in Geodynamic Evolution." Journal of Geography and Geology 11, no. 4 (November 30, 2019): 13. http://dx.doi.org/10.5539/jgg.v11n4p13.

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Petrographical and geochemical study, consistent with observed field relations show that the Boula Ibi syn- and post-kinematic granitoids in north Cameroon, occurred in banded gneisses. These syn- and post-kinematic granitoids consist of deformed monzonites typified by its granoblastic texture, diorites, syenites, granites and basic xenoliths of dioritic and monzonitic composition. They are calc-alkaline, hyperpotassic, metaluminous to slightly peraluminous and I-Type granitoids. They display high content in Fe2O3 + MgO + CaO (2.16 – 23.24 %) that reveals their intermediate affinity, magnesian and metaluminous character whilst the low A/CNK (< 1.1) content indicates their mantle origin. Harker diagrams and La/Sm vs La define the fractional crystallization and partial melting as the two main processes that led the geodynamic evolution of the Boula Ibi syn- and post-kinematic granitoids. These are consistent with low-content of Cs, Ta, Nb, Tb and Hf, supporting high melting rates ranging between 20 and 40% as well as molar Al2O3/(MgO + FeOt) vs CaO/(MgO + FeOt) plot showing magmatic evolutions from metabasaltic and metagreywackes sources.

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37

Reinhard, Christopher T., and Noah J. Planavsky. "Biogeochemical Controls on the Redox Evolution of Earth’s Oceans and Atmosphere." Elements 16, no. 3 (June 1, 2020): 191–96. http://dx.doi.org/10.2138/gselements.16.3.191.

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The redox state of Earth’s atmosphere has undergone a dramatic shift over geologic time from reducing to strongly oxidizing, and this shift has been coupled with changes in ocean redox structure and the size and activity of Earth’s biosphere. Delineating this evolutionary trajectory remains a major problem in Earth system science. Significant insights have emerged through the application of redox-sensitive geochemical systems. Existing and emerging biogeochemical modeling tools are pushing the limits of the quantitative constraints on ocean–atmosphere redox that can be extracted from geochemical tracers. This work is honing our understanding of the central role of Earth’s biosphere in shaping the long-term redox evolution of the ocean–atmosphere system.

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38

Frick, C., and S. W. Strauss. "Geochemical evolution of the Richtersveld area, South Africa, as deduced from regional geochemical maps of stream sediments." Journal of Geochemical Exploration 28, no. 1-3 (June 1987): 431–49. http://dx.doi.org/10.1016/0375-6742(87)90061-6.

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39

Zhang, Yunlong, Ziying Li, Saleh M. Dini, Mingkuan Qin, Ahmed S. Banakhar, Zhixing Li, Longsheng Yi, Abdullah M. Memesh, Abdullah M. Shammari, and Guochen Li. "Origin and Evolution of the Late Cretaceous Reworked Phosphorite in the Sirhan-Turayf Basin, Northern Saudi Arabia." Minerals 11, no. 4 (March 27, 2021): 350. http://dx.doi.org/10.3390/min11040350.

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The redeposition of pristine phosphorite plays an important role in phosphorus accumulation, which created reworked phosphorite extensively on the continental shelf. This paper, using geochemical analysis combined with data from petrology and diagenesis, focuses on the reconstruction of the formation processes of the Late Cretaceous Thaniyat phosphorite deposition in northwestern Saudi Arabia, which is a part of the famous large Neo-Tethys Ocean’s phosphorite deposit. The results of our study illustrate that the phosphorites represent the reworked products from the north, close to the edge of the Neo-Tethys Ocean’s shelf, where upwelling had accreted the pristine phosphorite. The reworked phosphatic grains were redeposited near the shore in sandstone, forming sandy phosphorite and on a carbonate platform and creating calcareous phosphorite. The microscale sedimentological and geochemical information hosted in the eroded phosphorite grains indicates that the source sediment, pristine phosphorite, occurred under a fluctuating geophysical condition and in a relatively limited geochemical environment. They were physically crushed and transported landward and deposited under oxic conditions, forming the Thaniyat phosphorites. Early diagenesis in the Thaniyat phosphorite was evidenced by recrystallization of the phosphate minerals, geochemical depletion, and C and O isotope excursion.

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40

THOMAS, ROBERT J., JOACHIM JACOBS, and BRUCE M. EGLINGTON. "Geochemistry and isotopic evolution of the Mesoproterozoic Cape Meredith Complex, West Falkland." Geological Magazine 137, no. 5 (September 2000): 537–53. http://dx.doi.org/10.1017/s0016756800004519.

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Whole-rock major and trace element geochemical and Rb–Sr/Sm–Nd isotopic data are presented for the Mesoproterozoic (∼1.0 Ga) metamorphic and igneous rocks of the Cape Meredith Complex, West Falkland. The data indicate that the oldest rocks, the ∼1.1 Ga supracrustal gneisses of the Big Cape Formation, which form three petrographic and geochemical groups (mafic amphibolite, quartz–plagioclase–biotite–hornblende intermediate gneiss and acid gneiss), probably represent a juvenile calc-alkaline, basalt–andesite–rhyolite volcanic sequence, with epsilon (εNdT) values and NdTDM ages of ∼+3 to +6 and ∼1100 to 1400 Ma respectively. It is argued on geochemical grounds that these metavolcanics were extruded in an island-arc at around 1120 Ma. The Big Cape Formation was intruded by granitoids during and after a collisional orogenic event at around 1090 Ma. The oldest, foliated, (G1) granodiorite was emplaced as thin sheets at approximately 1090 to 1070 Ma and is characterized by εNd values of ∼+1.5 to 4 (TDM = ∼1200 to 1400 Ma), showing its juvenile nature. The ∼1070 Ma (G2) syntectonic granitoid gneisses and ∼1000 Ma G3 post-tectonic granites also exhibit juvenile characteristics (εNd = ∼0 to +5 and TDM = 2200 to 1200 Ma, respectively). The granitoids show a time-composition evolution from Na-rich (G1) granodiorite to potassic, high-High Field Strength Element granites (G3). The geochemical and isotopic characteristics and geological evolution of the Cape Meredith Complex is comparable with that of the adjacent Gondwana crustal blocks in Natal (SE Africa) and Dronning Maud Land (East Antarctica), supporting models that demonstrate these areas evolved in a contiguous, juvenile arc environment prior to, and during, a major orogenic event at ∼1.1 Ga. These events were associated with the birth of the Rodinian supercontinent. The three areas remained juxtaposed during Rodinia break-up and were subsequently incorporated into Gondwana in the same relative positions.

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41

Anker, Yaakov, Eliahu Rosenthal, Haim Shulman, and Akiva Flexer. "Runoff geochemical evolution of the hypersaline Lower Jordan Valley basin." Israel Journal of Earth Sciences 58, no. 1 (December 1, 2009): 41–61. http://dx.doi.org/10.1560/ijes.58.1.41.

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Canfield, D. E. "The Coupled Biological and Geochemical Evolution of the Earth Surface." Mineralogical Magazine 62A, no. 1 (1998): 273. http://dx.doi.org/10.1180/minmag.1998.62a.1.144.

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Donovan, Joseph J., and Arthur W. Rose. "Geochemical evolution of lacustrine brines from variable-scale groundwater circulation." Journal of Hydrology 154, no. 1-4 (February 1994): 35–62. http://dx.doi.org/10.1016/0022-1694(94)90211-9.

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Hill, I. G., R. H. Worden, and I. G. Meighan. "Geochemical evolution of a palaeolaterite: the Interbasaltic Formation, Northern Ireland." Chemical Geology 166, no. 1-2 (May 2000): 65–84. http://dx.doi.org/10.1016/s0009-2541(99)00179-5.

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Bolge, Louise L., Michael J. Carr, Mark D. Feigenson, and Guillermo E. Alvarado. "Geochemical stratigraphy and magmatic evolution at Arenal Volcano, Costa Rica." Journal of Volcanology and Geothermal Research 157, no. 1-3 (September 2006): 34–48. http://dx.doi.org/10.1016/j.jvolgeores.2006.03.036.

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Saginor, Ian, Esteban Gazel, Claire Condie, and Michael J. Carr. "Evolution of geochemical variations along the Central American volcanic front." Geochemistry, Geophysics, Geosystems 14, no. 10 (October 2013): 4504–22. http://dx.doi.org/10.1002/ggge.20259.

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De Torres, Trinidad, José E. Ortiz, María J. García, Juan F. Llamas, Laureano Canoira, Miguel A. García De La Morena, and Ramón Juliá. "Geochemical evolution of amino acids in dentine of pleistocene bears." Chirality 13, no. 8 (2001): 517–21. http://dx.doi.org/10.1002/chir.1070.

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Kennedy, Katrina Allen. "Early-Holocene geochemical evolution of saline Medicine Lake, South Dakota." Journal of Paleolimnology 10, no. 2 (1994): 69–84. http://dx.doi.org/10.1007/bf00682506.

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CLIFT, P. D., and P. D. RYAN. "Geochemical evolution of an Ordovician island arc, South Mayo, Ireland." Journal of the Geological Society 151, no. 2 (March 1994): 329–42. http://dx.doi.org/10.1144/gsjgs.151.2.0329.

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Amorosi, Alessandro, Irene Sammartino, and Fabio Tateo. "Evolution patterns of glaucony maturity: A mineralogical and geochemical approach." Deep Sea Research Part II: Topical Studies in Oceanography 54, no. 11-13 (June 2007): 1364–74. http://dx.doi.org/10.1016/j.dsr2.2007.04.006.

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