Results 41 to 50 of about 59,970 (323)

The formation of authigenic deposits during Paleogene warm climatic intervals: a review

open access: yesJournal of Palaeogeography, 2020
Although Paleogene warm climatic intervals have received considerable attention for atmospheric and oceanographic changes, the authigenic mineralization associated with these time spans remains overlooked.
Santanu Banerjee   +3 more
semanticscholar   +1 more source

Main controlling factors for the enrichment of shale oil and significant discovery in second member of Paleogene Funing Formation, Qintong Sag, Subei Basin

open access: yesShiyou shiyan dizhi, 2021
Based on the study of hydrocarbon generation features, oil bearing property and reservoir property of shale in the second member of Paleogene Funing Formation in the Qintong Sag of the Subei Basin, the main controlling factors of shale oil enrichment ...
Hongsheng YAO   +6 more
doaj   +1 more source

An effective palynological preparation procedure using hydrogen peroxide [PDF]

open access: yes, 2007
Most pre-Quaternary palynology samples are currently prepared by demineralization of the sediment/sedimentary rock matrix using hydrochloric and hydrofluoric acids (HCl and HF respectively).
Kyffin-Hughes, Jane E.   +2 more
core   +2 more sources

Evaluation and influencing factors for brittleness of lacustrine shale reservoir: a case study of Qutang Sub-Sag, Subei Basin

open access: yesShiyou shiyan dizhi, 2021
In order to accurately evaluate the brittleness of lacustrine shale and explore its influencing factors, the mineral compositions, geochemical characteristics and reservoir spaces of the lacustrine shale samples from the second member of Paleogene Funing
Biao SUN   +6 more
doaj   +1 more source

Postcranial remains of basal typotherian notoungulates from the Eocene of northwestern Argentina [PDF]

open access: yesActa Palaeontologica Polonica, 2020
Notoungulates represent the most taxonomically diverse and temporally and geographically widespread group among South American native ungulates. Here, we analyze anatomical and systematic aspects of proximal tarsal bones recovered from the Lower and ...
Matías A. Armella   +6 more
doaj   +1 more source

Early Cenozoic denudation of central west Britain in response to transient and permanent uplift above a mantle plume [PDF]

open access: yes, 2018
Upwelling mantle plumes beneath continental crust are predicted to produce difficult to quantify, modest uplift and denudation. The contribution of permanent and transient components to the uplift is also difficult to distinguish.
Al-Kindi   +98 more
core   +1 more source

Jurassic to Paleogene: Part 2 Paleogene geochronology and chronostratigraphy

open access: yesGeological Society, London, Memoirs, 1985
Summary We present a revised Paleogene geochronology based upon a best fit to selected high temperature radiometric dates on a number of identified magnetic polarity chrons (within the late Cretaceous, Paleogene and Neogene) which minimizes apparent accelerations in sea-floor spreading.
Berggren, William A.   +2 more
openaire   +3 more sources

Exceptional continental record of biotic recovery after the Cretaceous–Paleogene mass extinction

open access: yesScience, 2019
Terrestrial record of recovery The extinction that occurred at the end of the Cretaceous period is best known as the end of the nonavian dinosaurs.
T. Lyson   +18 more
semanticscholar   +1 more source

Steadiness of the distribution of residual oil in the delta sequences of the Paleogene system of the Bohai Bay basin [PDF]

open access: yesНефтегазовая геология: Теория и практика, 2022
The deltas developed widely in several faulted basins in China. As a kind of important oil and gas reservoir, it is very necessary to make clear the internal architecture for prediction of the residual oil distribution in the late period of oilfield ...
Afanas'eva M.A., Chzhan Ee
doaj   +1 more source

NEW SEVEN COARSE-GRAINED PALEOGENE TETHYAN AGGLUTINATED FORAMINIFERAL SPECIES ON BOTH SIDES OF THE ATLANTIC OCEAN [PDF]

open access: yesScience Heritage Journal, 2023
The modern taxonomical consideration is used for seven coarse-grained agglutinated benthic foraminiferal species which are belonging to six genera from four countries in the Tethys around the Atlantic Ocean USA and Europe (Spain, France and Poland ...
Haidar Salim Anan
doaj   +1 more source

Home - About - Disclaimer - Privacy