The Geological ObserverLongman, Brown, Green, and Longmans, 1853 - 740 стор. |
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Сторінка viii
... reefs - Influence of volcanic action on coral reefs- Composition of coral reef accumulations — Influence of changes in the level of sea and land - Reefs near Bermuda 181-205 CHAPTER XII . Transportal of mineral matter by ice - Height of ...
... reefs - Influence of volcanic action on coral reefs- Composition of coral reef accumulations — Influence of changes in the level of sea and land - Reefs near Bermuda 181-205 CHAPTER XII . Transportal of mineral matter by ice - Height of ...
Сторінка 75
... reefs in the current known as the Gulf Stream ; * so that the waters in the Gulf of Mexico form a kind of comparatively tideless sea , in which deposits are effected much as in the Mediterranean . Though other rivers throw detritus into ...
... reefs in the current known as the Gulf Stream ; * so that the waters in the Gulf of Mexico form a kind of comparatively tideless sea , in which deposits are effected much as in the Mediterranean . Though other rivers throw detritus into ...
Сторінка 94
... Reefs , at 4 miles an hour . The stream is considered to range , in the meridian of 57 ° W. to 42 ° 45 ′ N. in summer , and to 42 ° N. in winter . A reflow , or counter current , sets down by the Florida Reefs or Keys to the S.W. and W ...
... Reefs , at 4 miles an hour . The stream is considered to range , in the meridian of 57 ° W. to 42 ° 45 ′ N. in summer , and to 42 ° N. in winter . A reflow , or counter current , sets down by the Florida Reefs or Keys to the S.W. and W ...
Сторінка 104
... reefs would be also included in them . By a glance at a map of Asia , it will be seen that a very large area , extending along 70 degrees of longitude from the Black Sea into China , with a varied breadth of 15 to 20 degrees of latitude ...
... reefs would be also included in them . By a glance at a map of Asia , it will be seen that a very large area , extending along 70 degrees of longitude from the Black Sea into China , with a varied breadth of 15 to 20 degrees of latitude ...
Сторінка 164
... at others he will find the shells jammed in amid the joints and crevices of rocks so firmly that they become difficult to remove . CHAPTER X. CORAL REEFS AND ISLANDS . - DISTRIBUTION OF 164 [ CH . IX . PRESERVATION OF ORGANIC REMAINS .
... at others he will find the shells jammed in amid the joints and crevices of rocks so firmly that they become difficult to remove . CHAPTER X. CORAL REEFS AND ISLANDS . - DISTRIBUTION OF 164 [ CH . IX . PRESERVATION OF ORGANIC REMAINS .
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Загальні терміни та фрази
accumulations acid action alumina amid animals appear ashes beach beds beneath blocks bottom breakers British Islands calcareous carbonate carbonic acid cavities cinders clay cliffs coal coast considerable considered coral reefs Cornwall crater crystals deposits depth detritus district dry land earthquake Edition effected elevated eruption estuary evidence exposed fathoms feet felspar fissures formed fragments geological glaciers granite ground hornblende igneous rocks inferred kind lakes lava lime limestone magnesia manner marine mass mechanical suspension Mendip Hills miles mineral matter mode of occurrence modifications molluscs molten mountain noticed observer occur ocean old red sandstone oolitic organic remains pebbles portions present produced Professor quartz red sandstone regards regions respect rise river sand sea-bottom section fig seen shells shores side silicates Silurian Sir James Ross sometimes species specific gravity streams substances sufficient surface temperature thrown tidal tide tion trachytic traversed various vegetable veins volcanic
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