Results 161 to 170 of about 26,237 (314)

Identification and correlation of the Aso‐3 tephra in the Omaezaki area, central Japan: A valuable key stratum for the MIS 6/5 transition period

Journal of Quaternary Science, EarlyView.
ABSTRACT The Aso‐3 tephra is one of the most significant widespread marker layers from the Middle to Late Pleistocene, generated by a large caldera‐forming eruption at the Aso volcano in Kyushu, southwestern Japan. Despite its importance, a distal co‐ignimbrite ash correlative has yet to be clearly identified, primarily because although volcanic glass ...
Toshinori Sasaki, Takuya Morimoto, Tatsuyuki Ueno, Kazuo Mizoguchi, Norihisa Goto, Hisanori Ominami, Shohei Onaka   +6 more
wiley   +1 more source

Study on the mechanical behavior and fracturing mechanism of rock containing two unparallel prefabricated fissures under uniaxial loading. [PDF]

PLoS One
Li J, Wei Y, Wang T.
europepmc   +1 more source

Alternating sandstones and shales in Chicontepec series

, 1920
Caption: Alternating sandstones and shales in Chicontepec series on road to Chicontepec, 1 mile East.

core  

Geochronological reconstruction of the Lateglacial deglaciation in the Arve Valley (Northern French Alps)

Journal of Quaternary Science, EarlyView.
ABSTRACT The timing and spatial patterns of glaciers retreat in the Northern French Alps during the Lateglacial (19.0–11.7 ka) remain debated, reflecting discrepancies among available chronological data sets. The complex interactions between major glaciers, such as the Rhône and Arve glaciers to the north and the Isère glacier to the south, represent a
Quentin Portal, Christian Crouzet, Jean‐François Buoncristiani, Julien Carcaillet   +3 more
wiley   +1 more source

Study on physico-mechanical properties and damage constitutive model of sandstone-like materials. [PDF]

Sci Rep
Zhang S, Qiao W, Song W, Wang M, Wang H, Wu Y.   +5 more
europepmc   +1 more source

Enhancing Rock Strength Prediction and Features Selection by Coupling Well Log Data and Deep Learning Approaches in Reservoir Geomechanics

International Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.
ABSTRACT Accurate rock strength parameters play a vital role in petroleum and mining operations for sustainable drilling activities, and wellbore stability analysis. This study investigates the applicability of deep learning techniques for assessing data‐driven models, and to conduct parametric sensitivity examination for feature attributes ranking to ...
Mohammad Islam Miah, Md. Shakil Rahaman, Travis Wiens   +2 more
wiley   +1 more source

Effects of diagenetic stage and burial depth on the microstructure and mechanical properties of coal-bearing sandstones. [PDF]

Sci Rep
Wang J, Li H, Mao T, Xu G, Su D, Liu K, Zhang L, Wang Z.   +7 more
europepmc   +1 more source

Eogenetic and telogenetic cementation of sandstones

, 1989
The present study concentrates on a major problem in many sedimentological studies, the prediction of Dorosity and permeability properties of sandstone unit in the subsurface: i.e., the destruction, preservation, and enhancement of porosity and ...
Sedimentology, Molenaar, N., IVAU: Instituut voor Aardwetenschappen Utrecht   +2 more
core  

Pinguicula brendae (Lentibulariaceae) sp. nov., a carnivorous plant from a tropical montane cloud forest in Hidalgo, Mexico

Nordic Journal of Botany, EarlyView.
A new species of Lentibulariaceae, Pinguicula brendae Rodríguez‐Ramírez, H.Shimai & A.R. Andrés‐Hernández, is described based on its unique morphological characteristics. This species is restricted to limestone rock walls in the San Bartolo Tutotepec municipality, central‐eastern Hidalgo, Mexico, where it inhabits a single locality on vertical, north ...
Ernesto C. Rodríguez‐ Ramírez, Hiro Shimai, Agustina R. Andrés‐ Hernández   +2 more
wiley   +1 more source

Geochronological insights of middle miocene primates and vertebrate fauna of Ramnagar (J&K, India): Integrating litho- and magnetostratigraphy. [PDF]

PLoS One
Choudhary D, Gilbert CC, Campisano CJ, Peppe DJ, Arif M, Singh SP, Tesfay K, Patel BA, Wazir WA, Kumar R, Phartiyal B, Singh NP, Sharma KM, Patnaik R.   +13 more
europepmc   +1 more source