[
    {
        "id": "thesis:5665",
        "collection": "thesis",
        "collection_id": "5665",
        "cite_using_url": "https://resolver.caltech.edu/CaltechTHESIS:03312010-140105733",
        "primary_object_url": {
            "basename": "Greenwood_r_1943.pdf",
            "content": "final",
            "filesize": 32855269,
            "license": "other",
            "mime_type": "application/pdf",
            "url": "/5665/1/Greenwood_r_1943.pdf",
            "version": "v4.0.0"
        },
        "type": "thesis",
        "title": "Geology of the Sugar Pine Area, Madera County, California",
        "author": [
            {
                "family_name": "Greenwood",
                "given_name": "Robert",
                "clpid": "Greenwood-Robert"
            }
        ],
        "thesis_advisor": [
            {
                "family_name": "Fraser",
                "given_name": "Horace J.",
                "clpid": "Fraser-H-J"
            },
            {
                "family_name": "Campbell",
                "given_name": "Ian",
                "clpid": "Campbell-I"
            }
        ],
        "thesis_committee": [
            {
                "family_name": "Unknown",
                "given_name": "Unknown"
            }
        ],
        "local_group": [
            {
                "literal": "div_gps"
            }
        ],
        "abstract": "The Sugar Pine area includes nine square miles in northern Madera County, on the western slope of the Sierra Nevada.\r\n\r\nIntrusive rocks of the Sierra batholith surround a central roof pendant and associated minor bodies of strongly folded and metamorphosed Paleozoic sediments. The main mass of the intrusive is tonalite, petrogaphically notable for the selective albitization of its potash feldspar.  It contains an abundance of diorite and gabbro and many small pegmatite and aplite dikes complete the Jurassic intrusive sequence.\r\n\r\nThe metamorphic rocks are mainly quartzite, with some schist and calcareous beds, the last giving rise to three distinct metamorphic rock types.  The margin of the pendant is locally marked by a zone of partial assimilation and reconstitution.\r\n\r\nPost-Jurrasic fracturing, perhaps involving some displacement, serves as structural control for several\r\nsprings in the area.\r\n\r\nTungsten mineralization is associated with one of two large pegmatites intruding the central pendant. Scheelite occurs disseminated in lenses of tactite, a restricted facies of the metamorphosed calcareous beds. Some tactite lenses carry over one per cent of scheelite, but small total volume of ore makes the exploitation of the deposit impractical.",
        "doi": "10.7907/SWC4-F244",
        "publication_date": "1943",
        "thesis_type": "masters",
        "thesis_year": "1943"
    }
]