Results 121 to 130 of about 26,862 (257)

Geochemistry of Eocene/Oligocene sediments of ODP Site 177-1090 [PDF]

, 2005
The Agulhas Ridge, off the tip of Africa between the Atlantic and Indian Oceans, is ideally located to capture the evolution of Paleogene-early Neogene circulation patterns associated with global cooling.
Margaret Lois Delaney (6966206), Anderson, Linda Davis, Linda Davis Anderson (6980954), Delaney, Margaret Lois   +3 more
core   +1 more source

1D Basin Modelling of Upper Jurassic to Upper Cretaceous Source Rocks in the Southern Pletmos Sub‐Basin, Outeniqua Basin, Offshore South Africa

Journal of Petroleum Geology, EarlyView.
ABSTRACT The Pletmos sub‐basin in the Outeniqua Basin, offshore South Africa, is divided by the Superior, Pletmos and Plettenberg faults into northern and southern depocentres. In this study, geological and organic geochemical data together with 1D basin modelling were used to investigate the burial, thermal and maturation histories, and the timing of ...
Fritz Ako Agbor, Sanelisiwe Mhlambi, Nimuno Achu Teumahji, Wasiu Adedayo Sonibare, Jan van Bever Donker   +4 more
wiley   +1 more source

California's vernal‐pool mousetails (Myosurus, Ranunculaceae): Phylogenetic analysis of ddRADseq data, hybridization tests, and species delimitation

Journal of Systematics and Evolution, EarlyView.
We present the first phylogenetic analysis of the Californian species of Myosurus. Our ddRADseq analysis reveals considerably more diversity than what was recognized in recent floristic treatments. Myosurus minimus subsp. apus was found to be a rare species restricted to Southern California and northwestern Baja California.
R. Douglas Stone, J. Travis Columbus, Aaron E. Sims   +2 more
wiley   +1 more source

Comments on the Caribbean Oligocene [PDF]

Geological Magazine, 1954
An objection is raised to the identification of beds in the Caribbean area as Miocene on the basis of the presence of Miogypsina, as proposed by Eames. Basal Camana beds in southern Peru contain Miogypsina and are Oligocene on the basis of correlation with beds in Ecuador.
openaire   +1 more source

The utility of deep-water agglutinated Foraminiferal acmes for correlating Eocene to Oligocene abyssal sediments in the North Atlantic and Western Tethys [PDF]

, 2005
Quantitative analysis of Deep-water Agglutinated Foraminifera (DWAF) assemblages from key ODP sites in the North Atlantic reveal the presence of stratigraphically-significant abundance maxima, that may be useful for correlating sedimentary sequences ...
Kaminski, M.A.
core  

Geophysical update of the diameter of the Zhamanshin impact structure, Kazakhstan

Meteoritics &Planetary Science, EarlyView.
Abstract The rim of the 0.9‐Ma‐old Zhamanshin impact crater in Kazakhstan is considered to be almost completely exposed via a series of hills surrounding a central flat area, indicating an apparent diameter of 14 km. This would make Zhamanshin the second largest impact crater of the Quaternary period. However, the overall geometry of these hills is not
Yoann Quesnel, Dilyara M. Kuzina, Jérôme Gattacceca, Minoru Uehara, Ayrat G. Kharisov, Dmitry D. Badyukov, Pierre Rochette   +6 more
wiley   +1 more source

Neogene stratigraphic architecture and tectonic evolution of Wanganui, King Country, and eastern Taranaki Basins, New Zealand [PDF]

, 2004
Analysis of the stratigraphic architecture of the fills of Wanganui, King Country, and eastern Taranaki Basins reveals the occurrence of five 2nd order Late Paleocene and Neogene sequences of tectonic origin.
Nelson, Campbell S., Avon P. McIntyre, Adam J. Vonk, Campbell S. Nelson, Vonk, Adam J., Kyle J. Bland, Hendy, Austin J.W., Austin J. W. Hendy, Peter J. J. Kamp, Stuart J. Cartwright, Bland, Kyle J., McIntyre, Avon P., Ngatai, Melodie, Kamp, Peter J.J., Hayton, Shaun, Rochelle J. Hansen, Melodie Ngatai, Hansen, Rochelle J., Cartwright, Stuart J., Shaun Hayton   +19 more
core   +1 more source

THE OLIGOCENE FORAMINIFERAL BIOSTRATIGRAPHY OF PAKISTAN

Rivista Italiana di Paleontologia e Stratigrafia, 2020
The marine Oligocene deposits of Pakistan are exposed in the Baluchistan and Lower Indus Basins. The Baluchistan Basin deposits are referred to the Khojak Formation of Makran Group.
A. A. KURESHY
doaj  

Hydrocarbon accumulation in the deep waters of South China Sea controlled by the tectonic cycles of marginal sea basins

Petroleum Research, 2016
: The tectonic cycle of the marginal sea basins in South China Sea (SCS) includes two cycles, i.e., the formation and contraction of Palaeo-SCS and Neo-SCS.
Gongcheng Zhang, Hongjun Qu, Shixiang Liu, Xiaojun Xie, Zhao Zhao, Huailei Shen   +5 more
doaj   +1 more source

The complex interaction between mammalian herbivores, climate, soil and fire has shaped the evolution and distribution of plant spinescence across biogeographical realms

New Phytologist, EarlyView.
Evolution of spinescence in mimosoid legumes. Summary The evolutionary arms race between plants and herbivores led to numerous plant adaptations, including spinescence. However, the balance between herbivory and abiotic conditions in the evolution of spinescence remains unclear. We integrated phylogenetic, geographic, and trait data for 2686 species of
Rachel Souza Ferreira, Jens J. Ringelberg, Colin Hughes, Eduardo Arlé, Friederike J. R. Wölke, Kyle W. Tomlinson, Renske E. Onstein   +6 more
wiley   +1 more source