The New Encyclopaedia Britannica, Volume 16Encyclopaedia Britannica, 1974 - Encyclopedias and dictionaries |
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Page 460
... reefs that characterize present - day tropi- cal marine environments . Where ancient reefs have been spread as blanket deposits by transgression or regression , the resulting facies is referred to as biostromal ; designa- tion as reef ...
... reefs that characterize present - day tropi- cal marine environments . Where ancient reefs have been spread as blanket deposits by transgression or regression , the resulting facies is referred to as biostromal ; designa- tion as reef ...
Page 470
... Reefs and stromatolites are two common varieties of such growth structures . Reefs can consist of corals or any other organisms capable of constructing a rigid topo- graphic deposit of carbonate in strongly agitated but shal- low lake ...
... Reefs and stromatolites are two common varieties of such growth structures . Reefs can consist of corals or any other organisms capable of constructing a rigid topo- graphic deposit of carbonate in strongly agitated but shal- low lake ...
Page 775
... reefs , marvellously exposed for study . Between the Baltic and Brittany , the Silurian is repre- sented by shales ... reef facies and some volcanics . Total thickness is somewhat under 200 metres . This sequence represents a large span ...
... reefs , marvellously exposed for study . Between the Baltic and Brittany , the Silurian is repre- sented by shales ... reef facies and some volcanics . Total thickness is somewhat under 200 metres . This sequence represents a large span ...
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