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词汇 turbidite
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Examples of turbidite


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The formation consists of fine-grained, thinly bedded, silty sandstones and siltstones which were deposited in a turbidite setting.
Subsequent abrupt deepening led to deposition of a thick black shale unit, turbidite deposits and large-scale submarine channel-fill deposits.
The lavas and deposits immediately overlie turbidite deposits, indicating submarine volcanic activity.
The realization has grown over the past decade that most turbidite systems do not represent the unimpeded radial fans of earlier models.
Convention in 1997 and, like many edited volumes, some time in gestation, the book aspires to be a comprehensive text on fine-grained turbidite systems.
Is the turbidite facies association scheme valid for interpreting ancient submarine fan environments?
However, fine-grained turbidite systems have been recognized as containing large enough amounts of sand to be economically useful.
The thickness of the sheared and non-sheared coherent turbidite sections ranges from several metres to several tens of metres.
Once regarded as unproductive and of only academic interest, turbidite systems are now the subject of intense research activity.
Workers on turbidite systems will want at least to refer to this volume, even if they do not buy a personal copy.
Synorogenic turbidite sediments can provide evidence of a pre-existing relief, concomitant surface uplift, and the former rock distribution at the surface of their source region.
Moreover, many turbidite systems are the product of contemporaneous crustal deformation, which not only uplifts sediment source areas but continually modifies the topography on which that sediment accumulates.
The upper sub-stage (b) of the lower stage of the upper turbidite system with chaotic bedding, slumps and slide planes is also interpreted as inner fan deposits.
Although this formation is mainly made up of pale green tuffaceous mudstone and felsic tuffs, andesitic volcanic, calcareous and terrigenous turbidite sandstone beds occur in the upper part.
The case studies are organized into sets which report different depositional systems (fluvio-deltaic, aeolian, deep-water turbidite systems, and carbonates) and a small set that focuses on structural styles.
The latter is a sandstonedominated turbidite sequence, spectacularly exposed in the cliffs and incorporating several, often local, mudstone units of which only two have been given formal 'member' status.


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