Annals of the South African Museum, Volume 101, Issue 2 |
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Page 12
Differential weathering of the lining temporarily exposes the burrow - fill in bas -
relief , but eventually both burrow lining and fill are excavated leaving the
bedding surface crowded with perpendicular holes ( Fig . 3 ) . These weathered -
out ...
Differential weathering of the lining temporarily exposes the burrow - fill in bas -
relief , but eventually both burrow lining and fill are excavated leaving the
bedding surface crowded with perpendicular holes ( Fig . 3 ) . These weathered -
out ...
Page 13
Differential weathering of the less resistant burrowfill and lining results in a
bedding surface crowded with holes perpendicular to bedding . Scale : 5 cm . =
Interpretation These vertical burrows are broadly similar to Ophiomorpha but lack
the ...
Differential weathering of the less resistant burrowfill and lining results in a
bedding surface crowded with holes perpendicular to bedding . Scale : 5 cm . =
Interpretation These vertical burrows are broadly similar to Ophiomorpha but lack
the ...
Page 18
HORIZONTAL TRACES ON UPPER BEDDING SURFACES Description Rare
upper bedding surface exposures 45-50 m above the base of the Sardinia Bay
Formation are covered by horizontal sand - filled burrows preserved in convex ...
HORIZONTAL TRACES ON UPPER BEDDING SURFACES Description Rare
upper bedding surface exposures 45-50 m above the base of the Sardinia Bay
Formation are covered by horizontal sand - filled burrows preserved in convex ...
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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 |