Annals of the South African Museum, Volume 101, Issue 2 |
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Page 9
Barren sandstone units in the Sardinia Bay strata represent former high - energy
depositional environments and shifting substrates hostile to sediment - dwelling
organisms . Pyritic trace - free mudrocks may have been deposited in biologically
...
Barren sandstone units in the Sardinia Bay strata represent former high - energy
depositional environments and shifting substrates hostile to sediment - dwelling
organisms . Pyritic trace - free mudrocks may have been deposited in biologically
...
Page 21
... ripple laminae , trough cross - bedding , and flaser- , wavy- and lenticular -
bedding . Biogenic structures are subordinate . The Skolithos ichnofacies is
believed to indicate high current and wave energy regimes in shallow marine
settings ...
... ripple laminae , trough cross - bedding , and flaser- , wavy- and lenticular -
bedding . Biogenic structures are subordinate . The Skolithos ichnofacies is
believed to indicate high current and wave energy regimes in shallow marine
settings ...
Page 24
The extensive bioturbation that occurred probably indicates long - term burrowing
in a low - energy environment in which ichnocoenoses were seldom displaced .
Bedding traces formed here would have a very low preservation potential ...
The extensive bioturbation that occurred probably indicates long - term burrowing
in a low - energy environment in which ichnocoenoses were seldom displaced .
Bedding traces formed here would have a very low preservation potential ...
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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
Bibliographic information
| Title | Annals of the South African Museum, Volume 101, Issue 2 Annals of the South African Museum, South African Museum |
| Author | South African Museum |
| Publisher | West, Newman & Company for the trustees of the Museum, 1991 |
| Original from | the University of California |
| Digitized | 20 Jul 2016 |
| ISBN | 0868131229, 9780868131221 |
| Export Citation | BiBTeX EndNote RefMan |