Submersible observations of Cretaceous deformations along the Côte d’Ivoire–Ghana transform marginGeo-Marine Letters - Tập 17 - Trang 49-54 - 1997
J. Benkhelil, J. Mascle, M. Guiraud, C. Basile
The Côte d’Ivoire–Ghana marginal ridge, mainly formed by thick detrital
sediments of Lower Cretaceous age, was surveyed by deep dives with the
submersible Nautile (Equanaute survey). Samples retrieved during the dives,
combined with observations of video and photos records, allowed us to document a
compressional event that occurred along the continental margin off Côte d’Ivoire
and Ghana, during ... hiện toàn bộ
Sediment density structure derived from textural analysis of cross-sectional X-radiographsGeo-Marine Letters - Tập 16 - Trang 204-211 - 1996
R. J. Holyer, D. K. Young, J. C. Sandidge, K. B. Briggs
Two image texture analysis procedures, autocorrelation and binary run length,
quantify the scales, orientation, and isotropy of density fluctuations imaged in
X-radiographs of sediment cross sections from the Arafura Sea (Australia) and
Eckernförde Bay (Germany). Image texture-based results agree with traditional
bulk methods in some cases and disagree in others. Advantages of imagebased
technique... hiện toàn bộ
The Ninetyeast Ridge in and around the Andaman Trench – an appraisal from marine magneticsGeo-Marine Letters - Tập 21 - Trang 9-15 - 2001
S. Ghatak, B. Banerjee
Marine magnetic data acquired in a part of the Bay of Bengal between latitudes
12°30′N to 14°N and longitudes 90°54′E to 92°54′E were transformed to frequency
domain. These data were used to prepare a sediment isopach map of the study
area. The results are in excellent agreement with sediment thicknesses reported
in an earlier study for a single seismic reflection profile along 13°N. In
addition, ... hiện toàn bộ
Bulk density calibration for X-ray tomographic analyses of marine sedimentsGeo-Marine Letters - Tập 19 - Trang 270-274 - 1999
Thomas H. Orsi, Aubrey L. Anderson
A calibration procedure is presented for generating bulk density profiles of
intact marine sediment cores using X-ray computed tomography (CT). Developed
using both artificial and natural marine sediment samples, the correlation is
strong with an R 2 value of 0.98. Similar experiments with carbonate sediments
were also strongly linear, but offset from the terrigenous curve, illustrating
the influe... hiện toàn bộ
Structural-morphological and sedimentary features of forearc slope off Miyagi, NE Japan: implications for development of forearc basins and plumbing systemsGeo-Marine Letters - Tập 40 - Trang 309-324 - 2020
Jih-Hsin Chang, Jin-Oh Park, Tzu-Ting Chen, Asuka Yamaguchi, Tetsuro Tsuru, Yuji Sano, Ho-Han Hsu, Kotaro Shirai, Takanori Kagoshima, Kentaro Tanaka, Chiori Tamura
Multibeam (MB) and subbottom profile (SBP) data along the forearc slope off
Miyagi, Japan, are combined to investigate structural-morphological and
sedimentary structures along the forearc slope of the Japan Trench subduction
zone. In addition to dip-oriented slope gullies, the MB data image a nearly
dip-perpendicular slope trough bounded by a fault scarp landward of the
trench-slope break. Seawar... hiện toàn bộ
Unifites: structureless muds of gravity-flow origin in Mediterranean basinsGeo-Marine Letters - Tập 1 - Trang 77-83 - 1981
Daniel Jean Stanley
Unifite is the descriptive term applied to a structureless or faintly laminated,
often thick, mud layer revealing a fining-upward trend. Study of Mediterranean
basins suggests this mud type represents rapid, single event deposition from
low-density gravity flows. This interpretation is based on unifite restriction
to basin plains, distinct vertical and lateral petrologic trends, and
lithofacies as... hiện toàn bộ
Improvement of deep-sea dredging operations through the use of a depth meterGeo-Marine Letters - Tập 7 - Trang 39-43 - 1987
H. R. Kudrass
A battery-operated depth meter mounted inside the dredge is used to monitor the
time-depth profile of a dredge haul. By comparing is profile with the water
depth recorded by the ship's echosounder, the locations at which dredge samples
were collected can be determined. The analysis of the time-depth profile can
also be used to estimate the minimum length of the dredge wire, thus increasing
the eff... hiện toàn bộ