Field Notebook: Arizona, Texas. 1923, 1924
Page 18
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Transcription
Quirk's paper of yesterday was to the effect that much of the north shore Lake Huron grinds and precises are metamorphosed sediments. Read this paper when printed. Larson spoke well of the paper, and Keith saw his rocks and slides. He told me that Quirk is correct. Miss Jonas' paper on Pre-Cambrian was a very similar sequence to that of Franklin Furace, some Paleogic relations to Pre- Cambian with areas. Guest on the Tampico Area paper. Has here about 3000 feet of shales and marls almost devoid of large forams. The upper 1000' has an abun- dance of pelagic forams, while the lower 2000 has benthic forms. The upper series is of the Cret (about Cretinichale) and is called the Reloso. It has 700 forms of forams. The lower series in the well known Papagayos formation. Hand cores are put down to 50 feet and or the forams are collected.