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PETROLOGY > Metamorphic Facies > Flashcards

Metamorphic Facies Flashcards

1
Q

Mineral assemblages in metamorphic rocks formed in response to a particular range of temp. and/or condition.

A

METAMORPHIC FACIES

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2
Q
  • Non-foliated, fine-grained Hornfels rocks and coarse-grained rocks.
  • Formed from heat-induced metamorphism.
  • Commonly localized around intrusions.
A

HORNFELS FACIES

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3
Q

The following are under the ________ facies?

  1. Albite-Epidote Hornfels facies
  2. Hornblende Hornfels Facies
  3. Pyroxene Hornfels Facies
  4. Sanidinite Hornfels Facies
A

HORNFELS FACIES

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4
Q

DIFFERENT TYPES OF HORNFELS FACIES

A
  1. Albite-Epidote Hornfels Facies
  2. Hornblende Hornfels Facies
  3. Pyroxene Hornfels Facies
  4. Sanidinite Hornfels Facies
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5
Q
  • Low-grade metamorphism.
  • Commonly exist with Quartz, Analcime, Laumontite, Heulandite, and Wairikite.
A

ZEOLITE FACIES

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6
Q
  • Low-grade metamorphism commonly produced from Basalt, Greywackes, and Mudstones.
A

PREHNITE-PUMPELLYITE FACIES

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7
Q
  • Medium-grade metamorphism.
  • Includes Epidote, Chlorite, and Actinolite in foliated and non-foliated metamorphic rocks.
A

GREENSCHIST FACIES

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8
Q
  • Medium to high grade metamorphism characterized by the start of appearance of Staurolite.
A

AMPHIBOLITE FACIES

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9
Q
  • Medium to high-grade metamorphism.
  • Dominated by granoblastic texture in non-foliated rocks.
  • Gneisses, Charnockites, and Migmatites.
A

GRANULITE FACIES

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10
Q
  • Medium to high-grade metamorphism from low temperature conditions.
  • Glaucophane, Aegirine, Kyanite.
A

BLUESCHIST FACIES

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11
Q
  • High-grade metamorphism.
  • Results in fine to coarse-grained, dense, dark-green rocks.
  • Commonly with reddish-brown Garnet porphyroblasts.
A

ECLOGITE FACIES

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12
Q

SEQUENCE of facies occurring across a metamorphic terrane due to differences in pressure and temperature conditions.

A

METAMORPHIC FACIES SERIES

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13
Q

FACIES SERIES
- >80 Degrees C/km
- Contact metamorphism
- Non-foliated texture

A

CONTACT

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14
Q

FACIES SERIES
- 40-80 degree C/KM
- dynamothermal & contact metamorphism
- foliated & non-foliated texture

A

BUCHAN

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15
Q

other name for BUCHAN facies series

A

ABUKUMA

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16
Q

FACIES SERIES
- 20-40 Degrees C/KM
- Dynamothermal metamorphism
- Foliated texture

A

BARROVIAN

17
Q

FACIES SERIES
- 10-20 Degrees C/km
- Dynamothermal metamorphism
- Foliated texture

A

SANBAGAWA

18
Q

FACIES SERIES
- <10 Degrees C
- Dynamothermal metamorphism at subduction zones
- Foliated texture

A

FRANCISCAN

PETROLOGY (15 decks)

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