 | 1871 - 398 pàgines
...trend changes around to north-west and south-east. Many of the ranges have a nucleus of metamorphic rocks, though the central and highest portions may...nucleus. This is shown in hundreds of instances in Colorado and New Mexico, where the eruptive material is oftentimes forced out over the metamorphic... | |
 | 1871 - 372 pàgines
...trend changes around to north-west and south-east. Many of the ranges have a nucleus of metamorphic rocks, though the central and highest portions may...nucleus. This is shown in hundreds of instances in Colorado and New Mexico, where the eruptive material is oftentimes forced out over the metamorphic... | |
 | 1871 - 372 pàgines
...around to north-west and south-east. Many of the ranges have a nucleus of metamorphic rocks, though die central and highest portions may be composed of eruptive...nucleus. This is shown in hundreds of instances in Colorado and New Mexico,-where the eruptive material is oftentimes forced out over the metamorphic... | |
 | 1871 - 804 pàgines
...trend changes around to north-west and south-east. Many of the ranges have a nucleus of metamorphlo rocks though the central and highest portions may...In this case the Igneous material Is thrust up in line* of the same direction as the trend. It becomes therefere evident that all the operations of the... | |
 | 1871 - 806 pàgines
...trend changes around to north-west and south-east. Many of the ranges have a nucleus of metamorphlc rocks though the central and highest portions may be composed of eruptive peaks and ridges. In this casu the Igneous material is thrust up In lines of (he same direction as the trend. It becomes therefore... | |
 | 1871 - 812 pàgines
...trend changes around to north-west and south-east. Many of the ranges have a nucleus of metamorplilc rocks though the central and highest portions may be composed of eruptive peaks and ridges. In this ease the Igneous material Is thru at up in lines of the same direction as the trend. It becomes then-fern... | |
 | 1871 - 1016 pàgines
...trend changes around to north-west and •outh-east. Many of the ranges have a nucleus of metamorphlc rocks though the central and highest portions may be composed of eruptive peaks and ridges. In this cose the igneous material la thrust up in lines of the same direction as the trend. It becomes therefore... | |
 | Geological and Geographical Survey of the Territories (U.S.) - 1873 - 274 pàgines
...the trend changes around to northwest and southeast. Many of the ranges have a nuclens of metamorphic rocks though the central and highest portions may...event subsequent to the elevation of the metamorphic nuclens. This is shown in hundreds of instances in Southern Colorado and New Mexico, where the eruptive... | |
| |
Many of the ranges have a nucleus of metamorphic rocks, though the central and highest portions may be composed of eruptive peaks and ridges. In this case the igneous material is thrust up in lines of the same direction as the trend. It becomes, therefore,... 