Results 71 to 80 of about 146,479 (306)

Alternating seismic uplift and subsidence in the late Holocene at Madang, Papua New Guinea: Evidence from raised reefs [PDF]

, 2000
Well-preserved mid-late Holocene coral reefs are exposed in low coastal cliffs in the vicinity of the Madang lagoon on the north coast of Papua New Guinea.
Abbott, Abbott, Abers, Alexander W. Tudhope, Bard, Bard, Berryman, Chappell, Chappell, Chappell, Chappell, Chappell, Cohen, Colin P. Chilcott, Daphne G. Fautin, Everingham, Graham B. Shimmield, Jere H. Lipps, Kelvin R. Berryman, Lilwall, Matthew Jebb, Mikloucho-Maclay, Miklouho-Maclay, Milsom, Ota, Pandolfi, Panzer, Peltier, Robert G. Pearce, Robert W. Buddemeier, Sato, Savage, Scoffin, Stoddart, Stuiver, Stuiver, Taylor, Terence P. Scoffm, Thatcher, Tregoning, Veeh, Zachariasen   +41 more
core   +1 more source

Study on the failure mechanism of the shield excavation face in the sandy cobble stratum under different buried depths

Deep Underground Science and Engineering, EarlyView.
Abstract One of the significant challenges faced in shield tunnel construction is the risk of collapse resulting from abrupt changes in soil conditions in advance of the working face, particularly within the sandy cobble stratum. This study aims to effectively manage these sudden variations and to further investigate the failure mechanisms associated ...
Hua Jiang, Chongyang Liu, Ao Zhang, Xiaoyan Zhang, Yuhang Li   +4 more
wiley   +1 more source

Tectonic interpretation of the connectivity of a multiscale fracture system in limestone [PDF]

, 2016
This paper studies the statistics and tectonism of a multiscale natural fracture system in limestone. The fracture network exhibits a self‐similar characteristic with a correlation between its power law length exponent a and fractal dimension D, i.e., a ≈
Lei, Q, Wang, X
core   +1 more source

Effect of confining pressure on fracture characteristics and mineralogical behavior of tight sandstone specimens after hydraulic fracturing

Deep Underground Science and Engineering, EarlyView.
Hydraulic fracturing in tight sandstone and fracture propagation characteristics using backscattered electron‐scanning electron microscope (BSE‐SEM) images. Abstract This study focuses on hydraulic fracturing experiments conducted under triaxial conditions on tight sandstone specimens from Shivpuri district, Madhya Pradesh, India.
Pankaj Rawat, Narendra Kumar Samadhiya
wiley   +1 more source

Tectonic evolution and source rocks development of the super oil-rich Bohai Bay Basin, East China

Petroleum Exploration and Development
The Bohai Bay Basin, as a super oil-rich basin in the world, is characterized by cyclic evolution and complex regional tectonic stress field, and its lifecycle tectonic evolution controls the formation of regional source rocks.
Gongcheng ZHANG, Dianjun TONG, Kai CHEN, Hui LIU, Xuan FANG   +4 more
doaj   +1 more source

Interpretation of the tectonic evolution of the western part of the Sava Depression: structural analysis of seismic attributes and subsurface structural modeling

Journal of Maps, 2019
This paper presents the results of an extensive structural investigation of the western part of the Sava Depression (SW part of the Pannonian Basin System) and provides insights in the tectonic evolution of the investigated area. Structural analyses were
Ivica Pavičić, David Rukavina, Bojan Matoš, Bruno Tomljenović   +3 more
doaj   +1 more source

Optimization of cut‐hole layout under high in situ stress based on numerical simulation and field tests

Deep Underground Science and Engineering, EarlyView.
This study investigates the blast‐induced rock damage patterns under different cut‐hole layouts and ground stress conditions through numerical simulations and field tests. The findings in this study provide valuable insights for similar underground engineering applications.
Junjie Zhao, Diyuan Li, P. G. Ranjith, Xinxin Lü, Yanliang Li, Xiaoli Su   +5 more
wiley   +1 more source

Resonance‐induced restoration of rock permeability degraded by heavy components of crude oil

Deep Underground Science and Engineering, EarlyView.
Resonance‐induced changes occur in filtration properties of sedimentary rocks in crude paraffin oil flow under acoustic vibrations. Experimental data on (a) pressure drop; (b) permeability; (c) pressure at the rock inlet; and (d) pressure at the rock outlet are presented.
Evgenii Riabokon, Qian Yin, Mikhail Guzev, Mikhail Turbakov, Evgenii Kozhevnikov, Nadezhda Riabokon, Ivan Panteleev   +6 more
wiley   +1 more source

The orosirian-statherian sequence and transpressive geometry in Santa Maria de Itabira, Minas Gerais [PDF]

Geologia USP. Série Científica, 2014
The metasedimentary rocks cropping out in the surroundings of the township of Santa Maria de Itabira (MG), comprise Orosirian quartzites herein informally named Pedra Branca Quartzite and the Statherian banded iron formation bearing sequences at the ...
Ricardo Pagung de Carvalho, Carlos Alberto Rosière, Vassily Khoury Rolim, Cristiano de Carvalho Lana, João Orestes Schneider Santos   +4 more
doaj   +1 more source

Quantifying the slip rates, spatial distribution and evolution of active normal faults from geomorphic analysis: Field examples from an oblique-extensional graben, southern Turkey [PDF]

, 2009
Quantifying the extent to which geomorphic features can be used to extract tectonic signals is a key challenge in the Earth Sciences. Here we analyse the drainage patterns, geomorphic impact, and long profiles of bedrock rivers that drain across and ...
Boulton, SJ, Whittaker, AC
core   +2 more sources