Results 71 to 80 of about 44,090 (253)

A review of the supercritical state of eruption‐fed volcanic density currents in subaerial and subaqueous settings

Sedimentology, EarlyView.
ABSTRACT Subaerial Pyroclastic Density Currents (PDCs) and Subaqueous Eruption‐Fed Density Currents (SEFDCs) produced during volcanic eruptions can present major hazards to surrounding communities and ecosystems. The bedforms deposited by these volcanic density currents can provide insights into the nature of transport and depositional processes, which
Shannon E. Frey, Martin Jutzeler, Rebecca J. Carey   +2 more
wiley   +1 more source

Neogene benthic foraminiferal stratigraphy and deep water history of Sites 645, 646, and 647, Baffin Bay and Labrador Sea [PDF]

, 1989
Benthic foraminifers were examined from Neogene sediments of Ocean Drilling Program (ODP) Sites 645, 646, and 647 to determine their biostratigraphy and to place constraints on the paleoceanographic history of Baffin Bay, Eirik Ridge, and the Gloria ...
Gradstein, F.M., Kaminski, M.A., MacKinnon, K.D., Scott, D.B.   +3 more
core  

MISS diversity from saline lakes of Brazilian Pantanal: Origin, potential of preservation and comparison with examples of the Ediacaran‐Cambrian shallow depositional settings

Sedimentology, EarlyView.
ABSTRACT One of the largest wetlands on Earth, the Brazilian Pantanal contains roughly 10 000 natural lakes, about 1000 of which are hypersaline. In these environmentally stressful settings, animal life struggles to survive, while cyanobacteria form extensive mats.
Lucas V. Warren, Filipe G. Varejão, Lucas Inglez, Maria Julia Arrouy, Beatriz Christofoletti, Mario L. Assine   +5 more
wiley   +1 more source

Travel-time seismic tomography for the seismic stratigraphic interpretation of the crust around the San Rafael knickpoint at Coca River, Ecuador [PDF]

Brazilian Journal of Geology
This research aims to obtain tomographic images to interpret the seismic stratigraphic profile around the San Rafael (SR) knickpoint using seismic tomography.
Isabel García López, Sebastián Araujo, Mario Ruiz   +2 more
doaj   +1 more source

Earthquake slip surfaces identified by biomarker thermal maturity within the 2011 Tohoku-Oki earthquake fault zone. [PDF]

, 2020
Extreme slip at shallow depths on subduction zone faults is a primary contributor to tsunami generation by earthquakes. Improving earthquake and tsunami risk assessment requires understanding the material and structural conditions that favor earthquake ...
Kirkpatrick, James D, Polissar, Pratigya J, Rabinowitz, Hannah S, Rowe, Christie D, Savage, Heather M   +4 more
core  

The Seismic Expression of Core Complex‐Style Extensional Detachment Faults in Rifted Margins

Terra Nova, EarlyView.
ABSTRACT The identification of core complex‐style extensional detachment faults (CCDFs) in rifted margins is crucial for accurately restoring their stratigraphic and thermal histories. Yet recognising CCDFs in seismic reflection images is challenging due to their faint topographic expression; the lack of associated abrupt offset in seismic reflections;
Pauline Chenin, Gianreto Manatschal, Cuimei Zhang, Peng Chao   +3 more
wiley   +1 more source

Seismic sedimentology of lower part of second member of Shanxi Formation in Gaojiahe area, Ordos Basin

Shiyou shiyan dizhi, 2020
The method of using seismic information to study the planar distribution characteristics of sedimentary system is illustrated using the lower part of the second member of the Lower Permian Shanxi Formation in the Gaojiahe 3D area of the Ordos Basin as an
Shenghua LAI, Pu BAI, Chao YE, Lei ZHANG, Jing CHI   +4 more
doaj   +1 more source

Evolution of the Giant Foresets Formation, northern Taranaki Basin, New Zealand [PDF]

, 2002
Plio-Pleistocene aggradation and progradation has resulted in the rapid outbuilding of the continental shelf margin, northern Taranaki Basin. Seismic reflection profiles reveal that this outbuilding is characterised by bold clinoforms which offlap in a ...
Hansen, Rochelle J., Kamp, Peter J.J.
core   +1 more source

Sedimentology and kinematics of a large, retrogressive growth-fault system in Upper Carboniferous deltaic sediments, western Ireland [PDF]

, 2004
Growth faulting is a common feature of many deltaic environments and is vital in determining local sediment dispersal and accumulation, and hence in controlling the resultant sedimentary facies distribution and architecture.
Busch D.A., Chisholm J.I., Collinson J.D., Crans W., Edwards M.B., Elliott T., Evamy D.D., Hampson G.J., Locat J., Nemec W., Rider M.H., Rider M.H., Wignall P.B.   +12 more
core   +1 more source

Multidisciplinary Approach to a Recovery Plan of Historical Buildings

International Journal of Geophysics, 2011
The paper emphasizes the advantages of employing multiple data techniques—geology, GPS, surveys of cracking, boreholes, seismic refraction and electrical resistivity tomography—to image the shallow stratigraphy and hypothesize the cause of ...
Luciana Orlando
doaj   +1 more source