technical letter number 102 preliminary de earhart robert glen brown (1 résultats)

Soft cover. Etat : Good. 1st Edition. Original staple-bound green printed wraps 22x28cm. (3)pp prelims including covering letter from Glen Brown to Fadil Kabbani, Deputy Minister for Mineral Resources, 11pp text + 2 full-page maps present as called for, printed to the rectos only. Wraps good, tanned towards the edges. Interiors very good with ink offsetting to the blank versos (not affecting text). This report is an early "preliminary" product of the monumental USGS-Aramco mapping project (1956-63), which, among other things, produced 21 Geological maps covering the whole of Saudi Arabia in a series of Quadrangles numbered I-200A to I-220A. It was prepared under the follow-up Saudi Arabian Mineral Exploration Project launched in 1963, which Brown coordinated from Jeddah. The area covered lies within the Tihamat Ash-Sham Quadrangle (covered by Map I-216A), accessible by an unpaved road from Jeddah, with an airstrip suitable for bush aircraft. Fieldwork was conducted during November 1967 by Ghanem Geri, a prospector-guide employed by USGS, who discovered copper in Jebel Sarbon. He was then joined by the author and AE Weissenborn of USGS to examine the discovery further. The first map, 1/1M, locates the area in relation to the Red Sea coast showing unpaved roads, major wadis, towns, and ancient mines. The second, 1:600, shows the location of samples and analytic results in the southern part of Jabal Sarbon. Very rare. Brown's covering letter states 20 copies were sent to Kabbani. Additional copies would have been circulated within USGS and probably Aramco. Worldcat locates only one at the Colorado School of Mines (OCLC 182624810). USGS reissued it in 1969 as Open-File Report 69-81 (USGS website).