. Journal of a tour in Marocco and the Great Atlas. Botany; Geology. GEOLOGY OF MAROCCO AND GEEAT ATLAS. 451 At a distance the cliff has a massive rocky aspect due to the vertical infiltration of tufaceous seams, which support the softer beds and stand out in prominent masses. The cliffs continue southwards to Saffi, where I obtained a small series of fossils from the section represented in fig. 1, amongst which Mr. Etheridge has determined Exogyra conica, Ostrea Leymerii, and 0. Boiossingaulti. He considers the beds to be of Neocomian age. The hard band c is almost entirely made up of Exogyra
. Journal of a tour in Marocco and the Great Atlas. Botany; Geology. GEOLOGY OF MAROCCO AND GEEAT ATLAS. 451 At a distance the cliff has a massive rocky aspect due to the vertical infiltration of tufaceous seams, which support the softer beds and stand out in prominent masses. The cliffs continue southwards to Saffi, where I obtained a small series of fossils from the section represented in fig. 1, amongst which Mr. Etheridge has determined Exogyra conica, Ostrea Leymerii, and 0. Boiossingaulti. He considers the beds to be of Neocomian age. The hard band c is almost entirely made up of Exogyra conica. I am indebted to the late Mr. Oarstensen, "Vice- consul at Mogador, for a specimen of Ostrea Leymerii, brought Fig. 1. Surface i C « M^ gj Compact grey sandstone. Ferruginous band. Sea-level. Clift Section, Saffl. to him by a Moor from Agadir, and obtained, at a height of 1,500 feet, on the flanks of the maritime termination of the Great Atlas range, 160 mUes south of the Saffi section. Two or three miles south of Saffi another section occurs, known as the' Jew's Cliff;' and from this Dr. Hooker, who landed on his homeward voyage, obtained a few fossils, viz. several undeterminable species of Pecten; an Ostrea allied to 0. Virleti, and a scutelliform Echinus of an unknown type, which Mr. Etheridge proposes to place under a new genus, and names Rotuloidea fimhriata. All these Mr. Etheridge sup- poses to be of Miocene age; and the 'Jew's Cliff' section may probably give the key to the age of the beds of the Marocco gg2. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Hooker, Joseph Dalton, Sir, 1817-1911; Ball, John, 1818-1889, joint author; Maw, George, 1832-1912. London, Macmillan and co.
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