His specialty is the micro-petrography of the fragmental rocks and crystalline schists, and pre-Cambrian stratigraphy and the genesis of some of the so-called crystalline rocks.
22.
The Zama Member at the center consists of fragmental carbonate, and is overlain by the Upper Anhydrite which consists of interbedded microcrystalline anhydrite and fine-to medium-crystalline dolostone.
23.
The original porphyritic, fluidal, vesicular or fragmental structures of the igneous rock are clearly visible in the less advanced stages of hornfelsing, but become less evident as the alteration progresses.
24.
Theoretically, by learning only these root words, as well as their fragmental forms and some major structure words ( cmavo ), one will be able to communicate effectively in Lojban.
25.
At the southern portion of the Circum-Superior Belt, a group of fragmental sediments composed of iron formation was formed during a period of magmatic activity in the Marquette Range Supergroup.
26.
The " Schalsteins " of Devon and Germany include many cleaved and partly recrystallized ash-beds, some of which still retain their fragmental structure though their lapilli are flattened and drawn out.
27.
Igneous rocks are divided into two main categories : extrusive rocks result from magma reaching the surface either as lava or " fragmental ejecta ", forming minerals such as pumice or basalt.
28.
Tuyas are a type of subglacial volcano that consists of nearly horizontal beds of lava capping outward-dipping beds of fragmental volcanic rocks, and they often rise in isolation above a surrounding plateau.
29.
The petrography composition of the coarse-fragmental material in the ripple marks witnesses also against this hypothesis, it is alien to the bed rock of the basins of the Tetio and the Aktru rivers.
30.
2-Sediek, K . N, Khalifa-Zade, Ch . M, Catagenesis model of fragmental and carbonate collectors of Triassic and Upper Paleozoic rocks, at Gebel Mangishlak, North Kazakhstan area.
