The Eruptive Rocks of Brent Tor And Its Neigbourhood Included in Sheet 25 of Th
The Eruptive Rocks of Brent Tor And Its Neigbourhood Included in Sheet 25 of Th
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In our eReader you can find the full English version of the book. Read The Eruptive Rocks of Brent Tor And Its Neigbourhood Included in Sheet 25 of Th Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book The Eruptive Rocks of Brent Tor And Its Neigbourhood Included in Sheet 25 of Th
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Fluxion texture is clearly discernible in some of the microlithic patches. The rock is essentially a devitrified rhyolite.
No. 4. Brent Tor (north side). A dark grey rock resembling a highly scoriaceous lava.
Under the microscope the section of this rock shows a quantity of opaque, finely-vesicular scoria, similar to that described as occurring in the preceding specimens (and which it was suggested might represent pumice). Here and there it seems that the rock is composed of fragments of this m...aterial. The vesicles are filled with siliceous matter, which has a very finely granular appearance when seen between crossed nicols, and similar substance surrounds the scoriaceous fragments. It is quite possible that the frag- 34 EKUPT1VE EOCKS OP BRENT TOR.
mentary aspect of this rock under the microscope may be deceptive, since the interspaces between the seeming fragments of scoria may merely represent sections of large, irregularly shaped vesicles which have like the smaller ones been filled up with siliceous matter.
What to read after The Eruptive Rocks of Brent Tor And Its Neigbourhood Included in Sheet 25 of Th?
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To quickly assess the difficulty of the text, read a short excerpt:
Fluxion texture is clearly discernible in some of the microlithic patches. The rock is essentially a devitrified rhyolite.
No. 4. Brent Tor (north side). A dark grey rock resembling a highly scoriaceous lava.
Under the microscope the section of this rock shows a quantity of opaque, finely-vesicular scoria, similar to that described as occurring in the preceding specimens (and which it was suggested might represent pumice). Here and there it seems that the rock is composed of fragments of this m...aterial. The vesicles are filled with siliceous matter, which has a very finely granular appearance when seen between crossed nicols, and similar substance surrounds the scoriaceous fragments. It is quite possible that the frag- 34 EKUPT1VE EOCKS OP BRENT TOR.
mentary aspect of this rock under the microscope may be deceptive, since the interspaces between the seeming fragments of scoria may merely represent sections of large, irregularly shaped vesicles which have like the smaller ones been filled up with siliceous matter.
What to read after The Eruptive Rocks of Brent Tor And Its Neigbourhood Included in Sheet 25 of Th?
You can find similar books in the "Read Also" column, or choose other free books by Frank Rutley to read onlineMoreLess
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