نتایج جستجو برای: lowstand

تعداد نتایج: 110  

Journal: :Open Geosciences 2022

Abstract The Miocene Zhujiang Formation is the key horizon for oil and gas exploration in Pearl River Mouth basin of northern South China Sea. With help core observation, seismic attributes various analytical data, sedimentary facies marks, distribution depositional model forced regression basin, Sea, have been studied. Forced regressive deposits were formed during period when relative sea leve...

2003
Simone R. Alin Andrew S. Cohen

Assemblages of ostracodes from sediment cores illuminate lake-level history at decadal to centennial timescales during the late Holocene at Lake Tanganyika, East Africa. The ostracode-based lake-level curves for several cores resemble both each other and the only previously published lake-level record of comparable resolution for Lake Tanganyika during this interval, successfully reconstructing...

2016
Rodrigo L Moura Gilberto M Amado-Filho Fernando C Moraes Poliana S Brasileiro Paulo S Salomon Michel M Mahiques Alex C Bastos Marcelo G Almeida Jomar M Silva Beatriz F Araujo Frederico P Brito Thiago P Rangel Braulio C V Oliveira Ricardo G Bahia Rodolfo P Paranhos Rodolfo J S Dias Eduardo Siegle Alberto G Figueiredo Renato C Pereira Camille V Leal Eduardo Hajdu Nils E Asp Gustavo B Gregoracci Sigrid Neumann-Leitão Patricia L Yager Ronaldo B Francini-Filho Adriana Fróes Mariana Campeão Bruno S Silva Ana P B Moreira Louisi Oliveira Ana C Soares Lais Araujo Nara L Oliveira João B Teixeira Rogerio A B Valle Cristiane C Thompson Carlos E Rezende Fabiano L Thompson

Large rivers create major gaps in reef distribution along tropical shelves. The Amazon River represents 20% of the global riverine discharge to the ocean, generating up to a 1.3 × 10(6)-km(2) plume, and extensive muddy bottoms in the equatorial margin of South America. As a result, a wide area of the tropical North Atlantic is heavily affected in terms of salinity, pH, light penetration, and se...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2017
Duane Froese Mathias Stiller Peter D Heintzman Alberto V Reyes Grant D Zazula André E R Soares Matthias Meyer Elizabeth Hall Britta J L Jensen Lee J Arnold Ross D E MacPhee Beth Shapiro

The arrival of bison in North America marks one of the most successful large-mammal dispersals from Asia within the last million years, yet the timing and nature of this event remain poorly determined. Here, we used a combined paleontological and paleogenomic approach to provide a robust timeline for the entry and subsequent evolution of bison within North America. We characterized two fossil-r...

2015
Christian Ohneiser Fabio Florindo Paolo Stocchi Andrew P. Roberts Robert M. DeConto David Pollard

The Messinian Salinity Crisis (MSC) was a marked late Neogene oceanographic event during which the Mediterranean Sea evaporated. Its causes remain unresolved, with tectonic restrictions to the Atlantic Ocean or glacio-eustatic restriction of flow during sea-level lowstands, or a mixture of the two mechanisms, being proposed. Here we present the first direct geological evidence of Antarctic ice-...

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