Magnetotelluric Studies across the Tasman Geosyncline, Australia
نویسندگان
چکیده
منابع مشابه
A Seafloor Magnetotelluric Sounding in the Tasman Sea
This paper reports an analysis of electromagnetic data from a site occupied on the floor of the Tasman Sea during an Australia-U.S. research program, the Tasman Project of Seafloor Magnetotelluric Exploration. This site (37ø33'S, 155ø58'E, depth 4450 m) is in the central portion of the Tasman Sea, and near both a fossil spreading ridge and the Tasmantid Seamount Chain. The extensive electric an...
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Surface-wave tomography for the Australian region, using data mostly from portable seismic recorders, reveals a very strong contrast in seismic shear-wave speed beneath central and western Australia and the east of the continent. Shear-wave speeds faster than the continental average extend to at least 200 km depth in the cratonic zone to the west of 140 E. Along an approximately north–south lin...
متن کاملMagnetotelluric Studies of Active Continent–Continent Collisions
Continent–continent collisions are an important tectonic process and have played a fundamental role in the evolution of the modern continents. A combination of geological and geophysical data has provided new constraints on the structure and temporal evolution of these orogens. Magnetotelluric (MT) studies have been an important part of these studies since they can constrain the fluid content a...
متن کاملGeomagnetic induction in the Tasman Sea and electrical conductivity structure beneath the Tasman Seafloor
During the Tasman Project of Seafloor Magnetotelluric Exploration recordings were made of the natural magnetic and electric field variations along a line of seafloor sites crossing the Tasman Sea. Using these data and additional magnetic field recordings made on the Australian continent the pattern of geomagnetic induction in the Tasrnan Sea Region is examined. An investigation of the seafloor ...
متن کاملGeochemistry, petrology and origin of Neoproterozoic ironstones in the eastern part of the Adelaide Geosyncline, South Australia
The eastern part of the Adelaide Geosyncline contains well preserved glaciomarine sequences of the Sturtian glaciation (:750–700 Ma) including calcareous or dolomitic siltstone, manganiferous siltstone, dolostone and diamictite units and the associated Braemar ironstone facies. The ironstone facies occurs as matrix to diamictites and as massive to laminated ironstones and comprises abundant Fe ...
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ژورنال
عنوان ژورنال: Geophysical Journal International
سال: 1971
ISSN: 0956-540X,1365-246X
DOI: 10.1111/j.1365-246x.1971.tb03617.x