The ore deposits of Utah . s believed to be the upper portionof the Morehouse quartzite the top of which isnot present in the San Francisco Range. Towhat extent, if any, the two members are dupU-cations has not been determined. No fossilswere found in the quartzite, but as it lies be-tween known Ordovician and Devonian rocksit has been provisionally assigned to the Ordo-vician and Silurian. Next above the Morehouse quartzite is theRed Warrior limestone, which for the mostpart is a heavy-bedded blue dolomitic and in Overlymg the Mowitza shale is the TopachoHmestone of 1,500 feet of heavy-bedded
The ore deposits of Utah . s believed to be the upper portionof the Morehouse quartzite the top of which isnot present in the San Francisco Range. Towhat extent, if any, the two members are dupU-cations has not been determined. No fossilswere found in the quartzite, but as it lies be-tween known Ordovician and Devonian rocksit has been provisionally assigned to the Ordo-vician and Silurian. Next above the Morehouse quartzite is theRed Warrior limestone, which for the mostpart is a heavy-bedded blue dolomitic and in Overlymg the Mowitza shale is the TopachoHmestone of 1,500 feet of heavy-bedded bluehmestono with beds of shale and chert. Fossils collected near the center of the forma-tion mdicate that it is probably lower Car-boniferous (Mississippian). A persistent quartzite (Talisman quartzite)about 400 feet thick, though rather variable,separates the Topacho hmestono from the over-lying Elephant limestone of Pcnnsylvanian age,a heavy-bedded dolomitic and sihceous lime-stone about 1,000 feet thick. 5,000 ±<. 1,000+- 400 I 1,500 . 5o : 1,5002,500+- 2,000 ±-300 4,000^ I , I UIa I I r^^
Size: 1516px × 1648px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, booksubjectminesandmineralresou
