| 41. | Protoliths are non-metamorphic rocks and thus have no protoliths themselves.
|
| 42. | Every continent has a core of very ancient metamorphic rocks.
|
| 43. | The principal geologic structures present are metamorphic rock formations.
|
| 44. | They are halfway between an igneous and metamorphic rock.
|
| 45. | Alan Knox Denmead was born in Melbourne, metamorphic rocks.
|
| 46. | This belt consists of ancient crystalline metamorphic rocks.
|
| 47. | Such gaps in the igneous or metamorphic rocks.
|
| 48. | Grinding stones were made of quartzite, metamorphic rock.
|
| 49. | Contact metamorphic rocks are usually known as hornfels.
|
| 50. | During the intruded into the metamorphic rocks.
|
