Part 2: Uncommon Magmatic Structures in Granites of the Borborema Province |
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Magmatic Structures Continued
Granite Layering
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A) Complex schlieren pattern, Tavares pluton |
B) Detail of A) showing shearing of schlieren |
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C) Layering, Itaporanga Pluton
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D) Layering, Itaporanga Pluton
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E) Detail of D)
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F) Layering, Serra Branca pluton
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G) Curved layering, Serra Branca pluton
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H) Complex layering forming an elliptical shape, only half the ellipse shown , Serra Branca pluton
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Magmatic Ellipsoids and Snails
Ellipsoids in Tavares pluton
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A) Three ellipsoids, Tavares pluton
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B) Ellipsoid, Tavares
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Ellipsoids in tonalitic Tanzawa pluton, Japan, courtesy of Dr Tetsuo Kanamaru, Kobe University, and Dr Ryo Anma, Tsukuba University
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Magmatic Snails
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A) Snail structure, Tavares pluton
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B) Snail structure, Tavares pluton
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Magmatic Diapirs, Tavares pluton
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A) Diapir delineated by schlieren
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B) Enclave-rich diapir in granite
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C) Diapir with poorly developed ladder structure along stem
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D) Magma channel depicted by schlieren margin. Diapir stem?
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