Annals of the South African Museum, Volume 101, Issue 2 |
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Page 9
The differences are ascribed to reduced circulation resulting in anoxic conditions
in parts of an ancient epeiric sea . Barren sandstone units in the Sardinia Bay
strata represent former high - energy depositional environments and shifting ...
The differences are ascribed to reduced circulation resulting in anoxic conditions
in parts of an ancient epeiric sea . Barren sandstone units in the Sardinia Bay
strata represent former high - energy depositional environments and shifting ...
Page 23
Their extreme shallowness over large areas may have led to frictional damping of
tides and currents in inner epeiric shelf reaches ( Shaw 1964 ; Irwin 1965 ;
Hallam 1981 ) , reducing circulation to the point where anoxic hypersaline
conditions ...
Their extreme shallowness over large areas may have led to frictional damping of
tides and currents in inner epeiric shelf reaches ( Shaw 1964 ; Irwin 1965 ;
Hallam 1981 ) , reducing circulation to the point where anoxic hypersaline
conditions ...
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U.C. BERKELEY LIBRARIES C0399105lb RETURN CIRCULATION
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Common terms and phrases
abbreviated animals anoxic appear areas author's name authors base bedding surface bioturbated branching burrows Cape capital Chondrites circulation cm Fig colonization contain correlation Cruziana Cruziana ichnofacies model dark pyritic deposited depositional environment described Description designated diameter Diplocraterion energy environment epeiric sea example facies Fascifodina Figure follow formed Frey & Pemberton Häntzschel 1975 horizontal hypersaline conditions illustrations indicate individual Interpretation interval italics known letters lining marking MUD AND SAND mudrock Note occur Ophiomorpha organisms origin parentheses Pemberton 1984 Photograph Planolites possible probably punctuation pyritic range reduction references represent resemble response restricted rocks rounded SAND sand-filled tubes sandstone Sardinia Bay Formation sediment sediment-dwelling sedimentary structures separates shafts Shone showing similar Skolithos Skolithos ichnofacies Smith SOUTH AFRICAN MUSEUM species Spreiten strata substrate suggest Table Table Mountain Group Thalassinoides tidal currents trace fossil association typical U-tube units Upper vermiform vertical wave weathering