Geology√

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Geology√

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Geology√

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Geology√

1974 Archival description results for Geology√

1974 results directly related Exclude narrower terms

Erratic. Logan boulder in front of National Museum Buliding, Ottawa

Erratic. Logan boulder in front of National Museum Buliding, Ottawa. Boulder is of Ottawa gneiss from formation Logan named and which he made classic by his studies. On it is a bronze plaque bearing his likeness and an inscription that reads: SIR WILLIAM LOGAN K.B., L.L.D., FRS/ 1798 - 1873/ The Father of Canadian Geology/ Founder and First Director of the/ Geological Survey of Canada/ 1842 - 1869/ Erected by the Twelfth/ International Geological Congress/ Canada/ MCMXIII.

Erosion surface

Erosion surface, slightly tilted to the East and which truncates the gneiss and granite of the Hercynian floor of the Cevannes. It is in fact a post-Hercynian erosion surface bearing superficial Triassic deposits. It is noticeably rejuvenated by the valley of the Chassezac and its tributaries. The floor has reacted to this rejuvenation as a homogenous mass, except for some harder seam that may be seen in the foreground. France Institut Geographique National. Relief form atlas, 1956, p. 101.

Eroded anticline

Eroded anticline. Breached anticline, limestone, in semi-arid climate at 6000 feet above sea level. Near Asmara, Eritrea. Monkhouse, 1959, p. 5.

Results 1231 to 1245 of 1974