A5041873880- Methane Hydrates and Related Phenomena
- Geological and Geochemical Analysis
- Geology and Paleoclimatology Research
- earthquake and tectonic studies
- Hydrocarbon exploration and reservoir analysis
- Geological formations and processes
- Seismic Imaging and Inversion Techniques
- Geological and Geophysical Studies
- Reservoir Engineering and Simulation Methods
- Spacecraft and Cryogenic Technologies
- Offshore Engineering and Technologies
- Geological Studies and Exploration
- Drilling and Well Engineering
- Clay minerals and soil interactions
- Geochemistry and Geologic Mapping
- Geological Modeling and Analysis
- Astro and Planetary Science
- Hydraulic Fracturing and Reservoir Analysis
- Astronomical Observations and Instrumentation
- High-pressure geophysics and materials
- Planetary Science and Exploration
- Soil and Unsaturated Flow
- Geomagnetism and Paleomagnetism Studies
- Scientific Research and Discoveries
- Geophysics and Gravity Measurements
New Mexico Institute of Mining and Technology
2015-2023
University of Missouri
2008-2022
International Ocean Discovery Program
2019-2020
Expedition (United Kingdom)
2019
University College London
2018
University of California, Santa Barbara
2011
University of Connecticut
1993
United States Geological Survey
1980-1987
Cornell University
1980-1982
Birkbeck, University of London
1977
Background and Purpose. Loss of lower-extremity strength increases the risk falls in older persons. The purpose this study was to test hypothesis that a vigorous program strengthening, walking, postural control exercises would improve single-stance balance healthy women lower their fall-associated injuries. Subjects. From total 38 respondents, 21 were randomly assigned either treatment group (combined training, n=12) or (flexibility n=9). subjects ranged age from 62 75 years (X̅=68, SD=3.5)....
The Nankai Trough accretionary prism is considered an “end‐member” accreting a coarse terrigenous sediment section in setting with structural simplicity, unparalleled resolution by seismic and other geophysical techniques, large historic earthquakes. It therefore has been the focus of Ocean Drilling Program (ODP) drilling to address several unresolved questions concerning processes evolution. At six sites cored along two transects across during ODP Leg 190, lithostratigraphy diagenesis vary...
Slow slip events (SSEs) accommodate a significant proportion of tectonic plate motion at subduction zones, yet little is known about the faults that actually host them. The shallow depth (<2 km) well-documented SSEs Hikurangi zone offshore New Zealand offers unique opportunity to link geophysical imaging with direct access incoming material represents megathrust fault rocks hosting slow slip. Two recent International Ocean Discovery Program Expeditions sampled this before it entrained...
Multiple lines of evidence exist for a range sediment mass movement processes within the shallow megasplay fault zone (MSFZ) area and adjacent slope basin in outer fore arc Nankai subduction zone, Japan. Diagnostic features observed three‐dimensional reflection seismic data cores Integrated Ocean Drilling Program (IODP) document multifarious history spanning ∼2.87 million years. Various modes scales remobilization can be related to different morphotectonic settings which they occurred. From...
Research Article| July 01, 1995 Abnormal fluid pressures and fault-zone dilation in the Barbados accretionary prism: Evidence from logging while drilling J. C. Moore; Moore 1Earth Sciences, University of California, Santa Cruz, California 95064 Search for other works by this author on: GSW Google Scholar T. H. Shipley; Shipley 2Institute Geophysics, Texas, Austin, Texas 78759 D. Goldberg; Goldberg 3Lamont-Doherty Earth Observatory, Palisades, New York 10964 Y. Ogawa; Ogawa 4Institute...
Abstract The transformation of smectite‐group clay minerals to illite has garnered considerable interest as a potentially important process affecting both the mechanical and hydrologic behavior subduction zones. Illitization can generate fluid overpressure by release bound water, mineralogical change associated cementation may increase intrinsic frictional strength while decreasing sliding stability faults. Released water also contributes pore freshening observed in boreholes at numerous...
Volcanic ash has long been recognized in marine sediment, and given the prevalence of oceanic continental arc volcanism around globe regard to widespread transport ash, its presence is nearly ubiquitous. However, presence/absence very fine-grained material, identification composition particular, challenging broad classification as an "aluminosilicate" component sediment. Given this challenge, many studies have focused on discrete layers (that is, that are millimeter-to-centimeter or greater...
Research Article| March 01, 2007 Diagenesis, sediment strength, and pore collapse in approaching the Nankai Trough subduction zone Glenn A. Spinelli; Spinelli 1Earth & Environmental Science Department, New Mexico Institute of Mining Technology, Socorro, 87801, USA Search for other works by this author on: GSW Google Scholar Peter S. Mozley; Mozley Harold J. Tobin; Tobin Michael B. Underwood; Underwood 2Department Geological Sciences, University Missouri, Columbia, Missouri 65211, Nicole W....
Summary Sedimentation patterns within modern subduction zones are complex and variable, do not necessarily follow models of submarine fan sedimentation. Environmental reconstructions ancient complexes should analogues as closely possible consider several criteria, including turbidite facies associations, vertical depositional cycles, regional palaeocurrent patterns, in many cases, structural style sandstone petrology. Important variables trench sedimentation include the volume texture...
Research Article| January 01, 1990 Upslope flow of turbidity currents: A comparison among field observations, theory, and laboratory models Maureen T. Muck; Muck 1Department Geology, University Missouri, Columbia, Missouri 65211 Search for other works by this author on: GSW Google Scholar Michael B. Underwood Author Article Information Publisher: Geological Society America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print 0091-7613 Geology (1990) 18 (1): 54–57....
Abstract Sediments deposited off the Nicoya Peninsula advect large volumes of water as they enter Costa Rica subduction zone. Seismic reflection data, together with results from Ocean Drilling Program Leg 170, show that hemipelagic mud comprises upper ∼135 m sediment column (ranging 0 to 210 m). The lower ∼215 470 m) is pelagic carbonate ooze. We analyzed samples 60 shallow (<7 cores characterize spatial variability composition on incoming Cocos Plate. bulk 10 wt% opal and smectite...
Seaward of the subduction zone off Nicoya Peninsula, Costa Rica, differences in thermal state ocean crust occur across a transition between generated at Cocos‐Nazca Spreading Center and formed East Pacific Rise. This change subducting plate results along‐strike temperature. These temperature variations are significant because they modulate diagenetic reaction progress hydraulic conductivity. A numerical simulation fluid production from opal‐to‐quartz smectite‐to‐illite diagenesis displays an...
Abstract Seismostratigraphy, coring, and logging while drilling during Integrated Ocean Drilling Program Expeditions 319, 322, 333 (Sites C0011/C0012) show three Miocene submarine fans in the NE Shikoku Basin, with broadly coeval deposits at Site 1177 Deep Sea Project 297 (NW Basin). The sediment dispersal patterns have major implications for paleogeographies that time. oldest, finer‐grained (Kyushu) fan has sheet‐like geometry; quartz‐rich flows were fed mostly from an ancestral landmass...
Abstract The northwestern edge of Cascadia Basin (North Pacific Ocean) is unusual because late Pliocene to Holocene turbidites lap onto juvenile oceanic crust the Juan de Fuca Ridge. Subsidence ridge flank combines with irregular westward progradation turbidite facies create a stratigraphic section that coarsens and thickens upward. sand provenance mixed. Individual turbidity currents have funneled into area through several shelf–slope abyssal-floor conduits, including Vancouver Valley,...