LEADER 05632nam 22007335 450 001 9910299556803321 005 20200706225947.0 010 $a3-319-07908-5 024 7 $a10.1007/978-3-319-07908-0 035 $a(CKB)3710000000218679 035 $a(EBL)1802973 035 $a(SSID)ssj0001286970 035 $a(PQKBManifestationID)11877771 035 $a(PQKBTitleCode)TC0001286970 035 $a(PQKBWorkID)11277946 035 $a(PQKB)10673866 035 $a(MiAaPQ)EBC1802973 035 $a(DE-He213)978-3-319-07908-0 035 $a(WaSeSS)117222 035 $a(PPN)180628011 035 $a(EXLCZ)993710000000218679 100 $a20140805d2014 u| 0 101 0 $aeng 135 $aur|n|---||||| 181 $ctxt 182 $cc 183 $acr 200 14$aThe Archaean: Geological and Geochemical Windows into the Early Earth /$fby Andrew Y. Glikson 205 $a1st ed. 2014. 210 1$aCham :$cSpringer International Publishing :$cImprint: Springer,$d2014. 215 $a1 online resource (246 p.) 225 1 $aModern Approaches in Solid Earth Sciences,$x1876-1682 ;$v9 300 $aDescription based upon print version of record. 311 $a1-322-13705-6 311 $a3-319-07907-7 320 $aIncludes bibliographical references and index. 327 $aPreface -- Field features of Archaean greenstone terrains -- Archaean Volcanism -- Archaean Plutonism -- Asteroid and comet impacts.-Archaean sedimentation -- Early life forms -- Secular geochemical trends -- Global Archaean tectonics -- Archaean crustal evolution ? a synthesis. 330 $aDeterminations of the age of the Earth as 4.54 ± 0.05 billion years (Ga) leave large part of its earliest history unknown. Isotopic and geochemical signatures in rocks as old as ~4.0 Ga indicate an evolutionary trend from mafic-ultramafic crust to tonalite-trondhjemite-granodiorite (TTG)-dominated micro continental nuclei. To date signatures of the 3.95 ? 3.85 Ga Late heavy Bombardment (LHB), manifested by the lunar Mare, have not been discovered on Earth. Recent discoveries of near to 14 Archaean impact ejecta units up to 3.48 Ga-old intercalated with volcanic and sedimentary rocks in the Barberton and Pilbara greenstone belts, including clusters about 3.25 ? 3.22 Ga and 2.63 ? 2.48 Ga in age, may represent terrestrial vestiges of an extended LHB. The interval of ~3.25 ? 3.22 Ga-ago emerges as a major break in Archaean crustal evolution when major asteroid bombardment resulted in faulting, large scale uplift, intrusion of granites and an abrupt shift from crustal conditions dominated by mafic-ultramafic crust associated with emplacement of TTG plutons, to semi-continental nuclei represented by arenites, turbidites, conglomerate, banded iron formations and felsic volcanics. At this stage pre-3.2 Ga dome-structured granite-greenstone systems were largely replaced by linear accretional granite-greenstone systems such as the Superior Province in Canada, Yilgarn Craton and the western Pilbara Craton, compared by some authors to circum-Pacific arc-trench settings. A fundamental geotectonic transformation is consistent with the increasing role of garnet fractionation as indicated by Al-depleted and plagioclase-enriched magmatic compositions, suggesting cooler high P/T (pressure/temperature) mantle and crustal magma sources, consistent with development of subduction. A concentration of large impacts during 2.63 ? 2.48 Ga potentially accounts for peak magmatic events culminating the Archaean era. However, strict comparisons between the Archaean systems and modern Arc-trench geotectonic setting will be shown to be unwarranted. The book provides an excursion through granite-greenstone terrains, and to a lesser extent high-grade metamorphic terrains, focusing on relic primary features including volcanic, sedimentary, petrological, geochemical and paleontological elements, with the aim of elucidating the nature of original environments and processes which dominated environments in which early life forms have emerged. By contrast to uniformitarian models, which take little or no account of repeated impacts of large asteroid clusters and their effects during ~3.47 ? 2.48 Ga, the Archaean geological record is consistent with the theory of asteroid impact-triggered volcanic activity originally advanced by D.H. Green in 1972 and 1981. 410 0$aModern Approaches in Solid Earth Sciences,$x1876-1682 ;$v9 606 $aPhysical geography 606 $aGeochemistry 606 $aPlanetary science 606 $aSedimentology 606 $aEarth System Sciences$3https://scigraph.springernature.com/ontologies/product-market-codes/G35000 606 $aGeochemistry$3https://scigraph.springernature.com/ontologies/product-market-codes/G14003 606 $aPlanetology$3https://scigraph.springernature.com/ontologies/product-market-codes/G18010 606 $aSedimentology$3https://scigraph.springernature.com/ontologies/product-market-codes/G17080 615 0$aPhysical geography. 615 0$aGeochemistry. 615 0$aPlanetary science. 615 0$aSedimentology. 615 14$aEarth System Sciences. 615 24$aGeochemistry. 615 24$aPlanetology. 615 24$aSedimentology. 676 $a551.712 700 $aGlikson$b Andrew Y$4aut$4http://id.loc.gov/vocabulary/relators/aut$0904200 801 0$bMiAaPQ 801 1$bMiAaPQ 801 2$bMiAaPQ 906 $aBOOK 912 $a9910299556803321 996 $aThe Archaean: Geological and Geochemical Windows into the Early Earth$92543216 997 $aUNINA