Results 91 to 100 of about 11,814 (314)

The marine geology of Mossel Bay, South Africa

open access: yes, 2014
Includes bibliographical references.This thesis presents work undertaken to better understand the complex evolution of the terrestrial landscape now submerged by high sea levels offshore of Mossel Bay along the South Coast of South Africa.
Cawthra, Hayley Candice
core  

Synonymy and stratigraphic ranges of Belemnopsis in the Heterian and Ohauan Stages (Callovian-Tithonian), southwest Auckland, New Zealand.

open access: yes, 2003
Belemnopsis stevensi, Belemnopsis maccrawi, and Belemnopsis sp. A (Challinor 1979a) are synonymous; B. stevensi has priority. New belemnite material from Kawhia Harbour and Port Waikato, together with graphical study methods, indicates that many small ...
A. B. Challinor, Challinor, A.B.
core   +1 more source

Real‐time lithology identification while drilling based on drill cuttings image analysis with ensemble learning

open access: yesDeep Underground Science and Engineering, EarlyView.
A lithology identification while drilling method was developed, integrating an automated cuttings sampling system, a smart drilling rig, and an ensemble learning model. Underground trials achieved 97.42% accuracy in real‐time identification of cuttings lithology and composition, enhancing hazard management and supporting unmanned drilling technology in
Kun Li   +7 more
wiley   +1 more source

The student's handbook of stratigraphical geology [PDF]

open access: yesBulletin of the American Geographical Society, 1912
Leon Dominian, A. J. Jukes-Browne
openaire   +3 more sources

Multiple injection techniques to stimulate complex fracture networks in coal reservoirs: A case study on gas disaster reduction of subsurface coal mine in southwest China

open access: yesDeep Underground Science and Engineering, EarlyView.
An experimental device for physical simulation of hydraulic fracturing, comprising: a load‐bearing mechanism with multiple interconnected plates that collectively form an sample chamber; a load‐generating mechanisms, with multiple load‐generating mechanisms arranged within the experimental chamber.
Delei Shang   +5 more
wiley   +1 more source

Integrated Geological and Geophysical Approaches for Geohazard Assessment in Salinas, Coastal Ecuador

open access: yesApplied Sciences
The Santa Elena Peninsula has experienced local subduction earthquakes in 1901 (7.7 Mw) and 1933 (6.9 Mw), during which local ground conditions, including deposits of longshore-current sediments, paleo-lagoon or marsh, sandspit, and ancient tidal channel
María Quiñónez-Macías   +5 more
doaj   +1 more source

Geology and Petroleum Systems of the East China Sea Basin

open access: yesEnergies, 2019
The back-arc East China Sea Basin lies on extended continental crust at the leading edge of the Eurasian plate. In this study, the basins are described and subdivided according to their tectono-stratigraphic evolution.
Bing Wang, Harry Doust, Jingyan Liu
doaj   +1 more source

Facies and sequence stratigraphy of the tamet formation (middle eocene), eastern sirte basin, Libya [PDF]

open access: yes, 1995
The middle Eocene Tamet Formation on the eastern side of the Sirte Basin, is largely shallow-marine carbonate platform-to-basin transition formed along passive margin.
El Hassi, Aiyad Mohamed
core  

The stratigraphic evolution of deep-water architecture

open access: yes, 2011
This Special Issue of Marine and Petroleum Geology features a series of scientific papers presented at the 2009 SEPM Field Research Conference held in the Ultima Esperanza District of Chilean Patagonia: ‘Stratigraphic Evolution of Deep-Water Architecture:
Romans BW, Fildani A, Hubbard SM
core   +1 more source

Fracture evolution of a thick soft protection layer and the water inrush mechanism in overburden under longwall mining

open access: yesDeep Underground Science and Engineering, EarlyView.
Through shear–tensile creep tests and viscoelastic modeling, the fracture evolution of thick soft protective layers is clarified. Results show thickness‐dependent rheological failure modes that govern four types of roof water inrush, providing a mechanism‐based framework for hazard prediction and control. Abstract In the Jurassic coal‐bearing strata of
Mengnan Liu   +4 more
wiley   +1 more source

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