Extensive 200-Million-Year-Old Continental Flood Basalts of the Central Atlantic Magmatic Province

Marzoli, Andréa; Renne, Paul R.; Piccirillo, E. M.; Ernesto, Márcia; Bellieni, G.; Min, Ângelo De

doi:10.1126/science.284.5414.616

Cited by 805 publications

(467 citation statements)

References 30 publications

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“…Speciation of the two cephalochordates-B. floridae lives along the Atlantic coast of America, whereas B. lanceolatum is found along the Atlantic coast of Europe and in the Mediterranean sea (Poss and Boschung 1996)-could have been a consequence of the drifting of major land masses, beginning around 200 MYA from the Pangea (Marzoli et al 1999). Therefore, it could be argued that present similarities in the two amphioxus species would not be based on recent divergence but, rather, on the absence of major morphological changes during the last 200 million years (Myr) or thereabouts.…”

Section: Evidence In Favor Of the Adh Family Expansion After The Cephmentioning

confidence: 99%

Ascidian and Amphioxus Adh Genes Correlate Functional and Molecular Features of the ADH Family Expansion During Vertebrate Evolution

et al. 2002

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Abstract. The alcohol dehydrogenase (ADH) family has evolved into at least eight ADH classes during vertebrate evolution. We have characterized three prevertebrate forms of the parent enzyme of this family, including one from an urochordate (Ciona intestinalis) and two from cephalochordates (Branchiostoma floridae and Branchiostoma lanceolatum). An evolutionary analysis of the family was performed gathering data from protein and gene structures, exon-intron distribution, and functional features through chordate lines. Our data strongly support that the ADH family expansion occurred 500 million years ago, after the cephalochordate/vertebrate split, probably in the gnathostome subphylum line of the vertebrates. Evolutionary rates differ between the ancestral, ADH3 (glutathione-dependent formaldehyde dehydrogenase), and the emerging forms, including the classical alcohol dehydrogenase, ADH1, which has an evolutionary rate 3.6-fold that of the ADH3 form. Phylogenetic analysis and chromosomal mapping of the vertebrate Adh gene cluster suggest that family expansion took place by tandem duplications, probably concurrent with the extensive isoform burst observed before the fish/tetrapode split, rather than through the large-scale genome duplications also postulated in early vertebrate evolution. The absence of multifunctionality in lower chordate ADHs and the structures compared argue in favor of the acquisition of new functions in vertebrate ADH classes. Finally, comparison between B. floridae and B. lanceolatum Adhs provides the first estimate for a cephalochordate speciation, 190 million years ago, probably concomitant with the beginning of the drifting of major land masses from the Pangea.

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Section: Evidence In Favor Of the Adh Family Expansion After The Cephmentioning

confidence: 99%

Ascidian and Amphioxus Adh Genes Correlate Functional and Molecular Features of the ADH Family Expansion During Vertebrate Evolution

et al. 2002

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“…201 Ma) was a pe riod of sud den global en vi ron men tal changes linked to the Pangea breakup (Wil son, 1997) and to de vel op ment of the gi ant Cen tral At lan tic Mag matic Prov ince (CAMP; Marzoli et al, 1999;Hames et al, 2000;Courtillot and Renne, 2003). Char ac ter is tic fea tures of this time were profound per tur ba tions in the global biogeochemical cy cle, an increase in at mo spheric CO 2 con tent, global green house warming, and mass ex tinc tion.…”

Section: Introductionmentioning

confidence: 99%

Climatic disaster at the Triassic-Jurassic boundary - a clay minerals and major elements record from the Polish Basin

Brański

2014

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1 Pol ish Geo log i cal In sti tute -Na tional Re search In sti tute, Rakowiecka 4, 00-975 Warszawa, Po land Brañski, P., 2014. Cli ma tic di sas ter at the Tri as sic-Ju ras sic bound ary -a clay min er als and ma jor el e ments re cord from the Pol ish Ba sin. Geo log i cal Quar terly, 58 (2): 291-310, doi: 10.7306/gq.1161The Tri as sic-Ju ras sic bound ary in ter val (ca. 201 Ma) was a time of sud den global en vi ron men tal changes trig gered by Pangea breakup and Cen tral At lan tic Mag matic Prov ince de vel op ment. The bulk-rock min er al ogy, clay min er al ogy and major el e ment geo chem is try of 87 con ti nen tal mudrock sam ples col lected from four bore hole cores yield in for ma tion on Rhaetian-ear li est Hettangian palaeoclimatic changes in the Pol ish Ba sin. Dur ing the Rhaetian, smectite pre pon der ance was re placed by kaolinite and illite dom i na tion. This fun da men tal shift in clay min eral as sem blages (sup ported by ma jor el ement data) in di cates very sig nif i cant change in cli mate hu mid ity. More over, some beds in the Zagaje For ma tion (Up per Rhaetian-Lower Hettangian) are par tic u larly rich in kaolinite in di cat ing ex treme chem i cal weath er ing in hu mid-sub trop i cal to trop i cal cli mate ep i sodes in the af ter math of pow er ful warm ing and abun dant rain fall. Im por tantly, the first dis tinct kaolinite en rich ment ap pears al ready in the Lower Rhaetian Wielichowo Beds. In ad di tion, abrupt and ep i sodic shifts in the kaolinite-illite ra tio and in val ues of weath er ing in di ces point to pro found cli mate de sta bi li sa tion and a se quence of fre quent, cat a strophic cli ma tic re ver sals in the Late Rhaetian and at the Tri as sic-Ju ras sic bound ary. These re sults are gen er ally consis tent with car bon iso tope re cords in sec tions world wide.Key words: Tri as sic-Ju ras sic bound ary, clay min er als, ma jor el e ments, weath er ing re gime, palaeoclimatic shifts, Pol ish Ba sin.

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“…This magmatism makes part of the Central Atlantic Magmatic Province (CAMP) defined by around 200 Ma-aged tholeiitic basalts and diabases, cropping out from previously united parts of North America, Europe, Africa and South America (Marzoli et al 1999). The thick intrusions brought about uplifting of the formations of the Paleozoic basins, being more significant in Gurupá and Purus arches, and in the Carauari and Monte Alegre highs, and larger relative subsidence in the central area of the basins due to the weight exerted on those areas by the wider sill thickness (Fig.…”

Section: Purus Arch and Amazon Basinmentioning

confidence: 99%

Eustatic and tectonic change effects in the reversion of the transcontinental Amazon River drainage system

Caputo

Soares

2016

Braz. J. Geol.

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The development of the transcontinental Amazon River System involved geological events in the Andes Chain; Vaupés, Purus and Gurupá arches; sedimentary basins of the region and sea level changes. The origin and age of this river have been discussed for decades, and many ideas have been proposed, including those pertaining to it having originated in the Holocene, Pleistocene, Pliocene, Late Miocene, or even earlier times. Under this context, the geology of the sedimentary basins of northern Brazil has been analyzed from the Mesozoic time on, and some clarifications are placed on its stratigraphy. Vaupés Arch, in Colombia, was uplifted together with the Andean Mountains in the Middle Miocene time. In the Cenozoic Era, the Purus Arch has not blocked this drainage system westward to marine basins of Western South America or eastward to the Atlantic Ocean. Also the Gurupá Arch remained high up to the end of Middle Miocene, directing this drainage system westward. With the late subsidence and breaching of the Gurupá Arch and a major fall in sea level, at the beginning of the Late Miocene, the Amazon River quickly opened its pathway to the west, from the Marajó Basin, through deep headward erosion, capturing a vast drainage network from cratonic and Andean areas, which had previously been diverted towards the Caribbean Sea. During this time, the large siliciclastic influx to the Amazon Mouth (Foz do Amazonas) Basin and its fan increased, due to erosion of large tracts of South America, linking the Amazon drainage network to that of the Marajó Basin. This extensive exposure originated the Late Miocene (Tortonian) unconformity, which marks the onset of the transcontinental Amazon River flowing into the Atlantic Ocean.

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Extensive 200-Million-Year-Old Continental Flood Basalts of the Central Atlantic Magmatic Province

Cited by 805 publications

References 30 publications

Ascidian and Amphioxus Adh Genes Correlate Functional and Molecular Features of the ADH Family Expansion During Vertebrate Evolution

Ascidian and Amphioxus Adh Genes Correlate Functional and Molecular Features of the ADH Family Expansion During Vertebrate Evolution

Climatic disaster at the Triassic-Jurassic boundary - a clay minerals and major elements record from the Polish Basin

Eustatic and tectonic change effects in the reversion of the transcontinental Amazon River drainage system

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