Mindoro Block
The Mindoro block is a Microcontinents, microcontinental block located in the Philippine Mobile Belt and the east side of North Palawan Block. It has comprises a metamorphic basement (Mindoro Metamorphics of Teves, 1953) of unknown but probably pre-late cretaceous age, overlain locally by upper cretaceous basalts (Karig, 1983), and more regionally succeeded by a probable upper eocene sequence of basinal clastic rocks, plus local basalt intercalations and Carbonate sedimentary rock, carbonates. These rocks are exposed over a broad area of northern and west-central Mindoro as well as on the Lubang Islands in Verde Island Passage. The Mindoro block is bounded on the west by the Mindoro Suture Zone, and on the north by the Verde Passage Suture (Karig, 1983), which separates it from the Zambales Ophiolite terrane of Luzon. The eastern terrane boundary may be the East Mindoro Fault Zone, a probable transcurrent boundary that has not yet been studied, but which displays evidence of recent a ...
[...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]  

Microcontinents
Continental crustal fragments, partly synonymous with microcontinents, are pieces of continents that have broken off from main continental masses to form distinct islands that are often several hundred kilometers from their place of origin. Causes Continental fragments and microcontinent crustal compositions are very similar to those of regular continental crust. The rifting process that caused the continental fragments to form most likely impacts their layers and overall thickness along with the addition of mafic intrusions to the crust. Studies have determined that the average crustal thickness of continental fragments is approximately . The sedimentary layer of continental fragments can be up to thick and can overlay two to three crustal layers. Continental fragments have an average crustal density of which is very similar to that of typical continental crust. Strike-slip fault zones cause the fragmentation of microcontinents. The zones link the extensional zones where co ...
[...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]