Results 21 to 30 of about 137,466 (363)

Characteristic and paleoenvironment significance of microbially induced sedimentary structures (MISS) in terrestrial facies across P-T boundary in Western Henan Province, North China

open access: yesOpen Geosciences, 2021
We report varied microbially induced sedimentary structures (MISS), and other sedimentary surface textures, from the Induan (Early Triassic) Sunjiagou Formation and Liujiagou Formation in the Xingyang, Dengfeng, Jiyuan and Yiyang areas, western Henan ...
Zheng Wei   +6 more
doaj   +1 more source

The impact of benthic microbial communities in sediment dispersion and bedform preservation: a view from the oldest microbially induced sedimentary structures in South America

open access: yesBrazilian Journal of Geology, 2022
The influence of microbial communities upon sedimentary dynamics is an issue of increasing significance. Over the last decades, studies have revealed a particular class of sedimentary structures and textures produced by the interaction among distinct ...
Lucas Veríssimo Warren   +5 more
doaj   +1 more source

Marine influence in the Barreiras Formation, State of Alagoas, northeastern Brazil

open access: yesAnais da Academia Brasileira de Ciências, 2009
Tidal processes were important for deposition of the Barreiras Formation located in northern Brazil, while correlatable deposits in northeastern Brazil have been traditionally related to continental environments.
Dilce F. Rossetti, Ana M. Góes
doaj   +1 more source

Sedimentation of the Lower Cretaceous Xiagou formation and Its Response to Regional Tectonics in the Qingxi Sag, Jiuquan Basin, NW China [PDF]

open access: yes, 2014
Under the constraint of an isochronous sequence stratigraphic framework, sediment infill of the Xiagou Formation reflects the overall control of dynamic tectonic movements and episodic sedimentations in the Qingxi Sag.
Chen, Si   +5 more
core   +1 more source

Hybrid coastal edges in the Neuquén Basin (Allen Formation, Upper Cretaceous, Argentina) [PDF]

open access: yes, 2015
The Allen Formation records the first Ingression Atlantic to the Neuquén Basin during the Late Cretaceous. The definition of lithofacies and facies associations interpretation for stratigraphic sections in Paso Córdoba and Salitral Moreno area, Río ...
Armas, María Paula   +1 more
core   +1 more source

Slip inversion along inner fore-arc faults, eastern Tohoku, Japan [PDF]

open access: yes, 2017
The kinematics of deformation in the overriding plate of convergent margins may vary across timescales ranging from a single seismic cycle to many millions of years.
Fisher, Donald M.   +4 more
core   +2 more sources

Use of axial tomography to follow temporal changes of benthic communities in an unstable sedimentary environment (Baie des Ha! Ha!, Saguenay Fjord) [PDF]

open access: yes, 2003
In the upper layer of the sediment column, organic matter recycling is greatly influenced by bioturbation. However, there are many physical changes in the nature of the sediment that may disturb benthic communities and create a biogeochemical imbalance ...
Aller   +70 more
core   +4 more sources

Origin of a sedimentary sequence on the north island of Todos Santos, B.C., Mexico

open access: yesCiencias Marinas, 1992
The Todos Santos Islands are located within Todos Santos Bay, Baja California. A small sedimentary sequence of about 160 m length and 18 m height is located on the north island.
AL Quintanilla-Montoya, F Suárez-Vidal
doaj   +1 more source

Study on the lithofacies of the second member of Tengger formation in Jiergalangtu of Erlian Basin [PDF]

open access: yesE3S Web of Conferences, 2020
Through analyzing coring well observation and in combination with drilling data log sheet and the analysis of the test data, combined with the regional sedimentary tectonic evolution background of the second member of Tengger formation in Jiergalangtu of
Daming Niu   +3 more
doaj   +1 more source

Identification of microbially induced sedimentary structures over a tidal flat

open access: yesLatin American Journal of Sedimentology and Basin Analysis, 2021
The influence of microbial activity in carbonatic environments leading to stromatolite build-ups is widely known. In siliciclastic environments, however, this influence has been far less studied.
Diana G. Cuadrado, Natalia V. Pizani
doaj   +2 more sources

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