Arid
DOI10.2113/gssgfbull.180.4.333
Cretaceous paleogeography, paleoclimatology, and amniote biogeography of the low and mid-latitude South Atlantic Ocean
Jacobs, Louis L.1; Mateus, Octavio2,3; Polcyn, Michael J.1; Schulp, Anne S.4; Scotese, Christopher R.5; Goswami, Argyha5; Ferguson, Kurt M.1; Robbins, John A.1; Vineyard, Diana P.1; Buto Neto, Andre6
通讯作者Jacobs, Louis L.
来源期刊BULLETIN DE LA SOCIETE GEOLOGIQUE DE FRANCE
ISSN0037-9409
EISSN1777-5817
出版年2009
卷号180期号:4页码:333-341
英文摘要

The Cretaceous tropical Atlantic Ocean was the setting for an initial tectonically controlled late Aptian shallow water (<= 300 m) connection between the northern and southern portions of the Atlantic, followed by a deep-water connection by the Turonian. Ocean currents changed with deepening of the South Atlantic and progressive widening of the Equatorial Atlantic Gateway. Aptian evaporite deposition came to a halt. The Albian-Turonian interval includes a trend toward increasing sea level and was characterized by globally warm sea surface temperatures. Productive areas of coastal upwelling led to the deposition of organic-rich sediments varying in position along the African coast with time, culminating in the Benguela Upwelling that commenced in the Miocene. The drift of Africa in the Late Cretaceous indicates that throughout most of this period, the coastal area around the fossil locality of Iembe, north of Luanda, Angola, lay in and latitudes (15 degrees S to 30 degrees S), which are generally characterized by sparse vegetation. This presumption is consistent with the utter lack of macroscopic terrestrial plant debris washed into near shore sedimentary environments and indicates that organic rich marine shales have a minimal terrestrial carbon component. The connection of the North and South Atlantic oceans severed a direct terrestrial dispersal route between South America and Africa, but opened a north-south dispersal route for marine amniotes. This seaway was used by late Turonian mosasaurs and sea turtles as evidenced by Angolasaurus and a new turtle taxon close to Sandownia, both found at Iembe and derived from northern clades. The presence of a sauropod in late Turonian sediments, also from Iembe, suggests that this animal was tolerant of warm, and conditions as the desert elephants of Namibia are today. Further, it suggests that the waning terrestrial dispersal route between South America and Africa was situated in a region where high temperature, low rainfall, and sparse vegetation would be expected to restrict the movement of more mesic and ecologically sensitive species.


英文关键词Paleobiogeography Angola South Atlantic Cretaceous Mosasaur Angolasaurus Turtles Chelonians Squamates
类型Article
语种英语
国家USA ; Portugal ; Netherlands ; Angola
收录类别SCI-E
WOS记录号WOS:000271151900005
WOS关键词PHYLOGENETIC-RELATIONSHIPS ; SERGIPE BASIN ; STABLE CARBON ; MOSASAURIDAE ; SQUAMATA ; EVOLUTION ; NORTHERN ; SYSTEM ; TEXAS ; GONDWANA
WOS类目Geosciences, Multidisciplinary
WOS研究方向Geology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/160083
作者单位1.So Methodist Univ, Roy M Huffington Dept Geol Sci, Dallas, TX 75275 USA;
2.Univ Nova Lisboa, Dept Ciencias Terra, FCT, P-1200 Lisbon, Portugal;
3.Museu Lourinha, P-2530157 Lourinha, Portugal;
4.Nat Hist Museum, NL-6211 KJ Maastricht, Netherlands;
5.Univ Texas Arlington, Dept Earth & Environm Sci, Arlington, TX 76019 USA;
6.Univ Agostinho Neto, Luanda, Angola
推荐引用方式
GB/T 7714
Jacobs, Louis L.,Mateus, Octavio,Polcyn, Michael J.,et al. Cretaceous paleogeography, paleoclimatology, and amniote biogeography of the low and mid-latitude South Atlantic Ocean[J],2009,180(4):333-341.
APA Jacobs, Louis L..,Mateus, Octavio.,Polcyn, Michael J..,Schulp, Anne S..,Scotese, Christopher R..,...&Buto Neto, Andre.(2009).Cretaceous paleogeography, paleoclimatology, and amniote biogeography of the low and mid-latitude South Atlantic Ocean.BULLETIN DE LA SOCIETE GEOLOGIQUE DE FRANCE,180(4),333-341.
MLA Jacobs, Louis L.,et al."Cretaceous paleogeography, paleoclimatology, and amniote biogeography of the low and mid-latitude South Atlantic Ocean".BULLETIN DE LA SOCIETE GEOLOGIQUE DE FRANCE 180.4(2009):333-341.
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