welded tuff उदाहरण वाक्य
उदाहरण वाक्य
- The spillway excavation was designed to be located entirely in welded tuff and not to encroach on either the underlying non-welded tuff or the overlying sandstone, both of these rock types being much inferior to the welded tuff as a rock fill construction material.
- The spillway excavation was designed to be located entirely in welded tuff and not to encroach on either the underlying non-welded tuff or the overlying sandstone, both of these rock types being much inferior to the welded tuff as a rock fill construction material.
- The spillway excavation was designed to be located entirely in welded tuff and not to encroach on either the underlying non-welded tuff or the overlying sandstone, both of these rock types being much inferior to the welded tuff as a rock fill construction material.
- It was previously named the Hornblendic welded tuff and dated 15.83 ?0.44-14.22 ?0.33 million years ago; a younger date of 13.52 ?0.12 million years ago has been obtained on it.
- In Gadeb, Ethiopia, fragments of welded tuff that appeared to have been burned, or scorched, were found alongside " H . erectus " created Acheulean artifacts; but such re-firing of the rocks may have been caused by local volcanic activity.
- The sediments of the Uriconian are indicated to have been deposited rapidly with such volcanism being dated ( U-Pb Zircon ) at 566 + /-2Ma ( Note the Uriconian is cross-cut by the Late Precambrian Ercall Granophyre dated 560 + /-1Ma . ) The sequence is dominated by pyroclastic deposits, breccias and welded tuffs which is suggestive of a former volcanic centre being in close proximity and deposition in a subaerial environment.