Results 101 to 110 of about 2,993,327 (417)

Stratigraphy of the Hawai'i Scientific Drilling Project core (HSDP2): Anatomy of a Hawaiian shield volcano [PDF]

open access: yes, 2007
The Hawai'i Scientific Drilling Project (HSDP2) successfully drilled ∼3.1 km into the island of Hawai'i. Drilling started on Mauna Loa volcano, drilling 247 m of subaerial lavas before encountering 832 m of subaerial Mauna Kea lavas, followed by 2019 m ...
Baker, Michael   +3 more
core   +1 more source

Interglacial dust, ocean fertilisation and Neoproterozoic earth oxygenation

open access: yesThe Depositional Record, EarlyView.
Mineral dust is an integral part of modern ocean nutrient supply. It is originated mainly in deserts and by glacial processes. Given the global scale of the Neoproterozoic glaciations, we suggest that mineral dust formed during snowball events were blown to oceans, sustaining life, promoting CO2 sequestration and contributing to the oxygenation of ...
Leandro G. DaSilva   +2 more
wiley   +1 more source

Diverse Deformation Mechanisms and Lithologic Controls in an Active Orogenic Wedge: Structural Geology and Thermochronometry of the Eastern Greater Caucasus

open access: yesTectonics, Volume 41, Issue 12, December 2022., 2022
Abstract Orogenic wedges are common at convergent plate margins and deform internally to maintain a self‐similar geometry during growth. New structural mapping and thermochronometry data illustrate that the eastern Greater Caucasus mountain range of western Asia undergoes deformation via distinct mechanisms that correspond with contrasting lithologies ...
A. R. Tye   +4 more
wiley   +1 more source

Mixed clastic‐carbonate lake margin systems: An example from the Triassic of East Greenland

open access: yesThe Depositional Record, EarlyView.
This study examines a rare example of a mixed clastic‐carbonate shore zone from the Late Triassic of East Greenland. Two facies models are proposed. The interaction of sediment supply and production are shown to be key factors in governing facies development and these are in turn predominantly controlled by lake‐level dynamics and lake margin ...
Steven D. Andrews, Li Guo
wiley   +1 more source

Foraminifera Distribution Patterns within Sequence Stratigraphy (A Case Study: Blora Area and Surroundings/Low Latitude Area)

open access: yesJournal of Mathematical and Fundamental Sciences, 2019
Sari. Analisis stratigrafi sikuen memerlukan data yang menyeluruh dari berbagai disiplin ilmu geologi, termasuk biostratigrafi. Secara hipotesis, biostratigrafi (foraminifera) dapat dijadikan alat untuk mengidentifikasi sikuen.
Khoiril Anwar M.
doaj  

Dynamic and Isotopic Evolution of Ice Reservoirs on Mars [PDF]

open access: yes, 2019
The layered polar caps of Mars have long been thought to be related to variations in orbit and axial tilt. We dynamically link Mars's past climate variations with the stratigraphy and isotopic composition of its ice by modeling the exchange of H2O and HDO among three reservoirs.
arxiv   +1 more source

Frontier exploration and the North Atlantic Igneous Province : new insights from a 2.6 km offshore volcanic sequence in the NE Faroe–Shetland Basin [PDF]

open access: yes, 2017
Acknowledgements and Funding This work was funded by Chevron. The authors would like to acknowledge the Chevron West of Shetlands team along with the Joint Venture partners OMV, Faroe Petroleum and Indemitsu for access to data along with permission to ...
Campbell, E.   +4 more
core   +2 more sources

Sedimentology and reservoir characterisation of Lower Jurassic clastic sedimentary rocks, Salt and Trans Indus Ranges, Pakistan: Evidence from petrography, scanning electron microscopy and petrophysics

open access: yesThe Depositional Record, EarlyView.
In this study, sandstones of the Lower Jurassic Datta Formation (DF‐LJ) in the Salt and Trans‐Indus Ranges are investigated regarding composition, diagenesis, provenance and reservoir properties using petrography, scanning electron microscopy (SEM) and petrophysical analysis.
Salman Ahmed Khattak   +7 more
wiley   +1 more source

STRATIGRAFIA SEQUENZIALE DELLA SUCCESSIONE OLIGO-MIOCENICA DELLE LANGHE, BACINO TERZIARIO LIGURE-PIEMONTESE

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2017
The Piedmont Tertiary Basin (PTB) is bounded southwards and westwards by the Western Alps, and northwards by the north-western end of the Apennines. It develops internally to a south-dipping suture zone, on a basement consisting of allochthonous alpine ...
ROMANO GELATI   +3 more
doaj   +1 more source

Further comments-Waihi Terrace and Hamilton Ash Ages [PDF]

open access: yes, 1971
The authors of the previous paper (Selby et al. 1971) kindly allowed us to see their manuscript, prior to publication. They have made a significant contribution to Bay of Plenty late Quaternary stratigraphy in recognising established ash beds in the ...
Kear, David, Waterhouse, B.C.
core   +1 more source

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