Deformation of the Josephine Peridotite, California and Oregon:
Gespeichert in:
| Beteilige Person: | |
|---|---|
| Format: | Buch |
| Sprache: | Englisch |
| Veröffentlicht: |
Washington
US Gov. Print. Off.
1987
|
| Schriftenreihe: | Geological Survey <United States>: Geological Survey professional paper
1378 |
| Schlagwörter: | |
| Links: | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=000510487&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
| Umfang: | IV, 45 S. Ill., graph. Darst., Kt. |
Internformat
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| 100 | 1 | |a Evans, James George |e Verfasser |4 aut | |
| 245 | 1 | 0 | |a Deformation of the Josephine Peridotite, California and Oregon |c by James G. Evans |
| 264 | 1 | |a Washington |b US Gov. Print. Off. |c 1987 | |
| 300 | |a IV, 45 S. |b Ill., graph. Darst., Kt. | ||
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Datensatz im Suchindex
| _version_ | 1819367057652711424 |
|---|---|
| adam_text | Deformation of the Josephine Peridotite,
California and Oregon
By JAMES G EVANS
USGEOLOGICALSURVEYPROFESSIONALPAPER1378
Eigentttro;
GeoL-Palaont Ins
Ff$za£furt a M
UNITEDSTATESGOVERNMENTPRINTINGOFFICE,WASHINGTON:1987
CONTENTS
lJage
Abstract 1
Introduction 2
Geologic setting 2
Josephine Peridotite 5
Structural analysis 7
Introduction 7
Descriptions of minor structures 9
Layers and foliations 9
Folds 11
Rods 13
Mineral lineations 14
Dikes 14
Summary 15
Mesoscopic fabric 16
Area I: Low Plateau Mountain 16
Area II: High Plateau Mountain 18
Area III: Stony Creek 22
Area IV: Chrome No 1 22
Area V: Elk Camp Ridge 22
Area VI: Elk Camp 23
Area VII: Low Divide 23
Area VIII: High Divide 26
Area IX: Pine Flat Mountain 27
Area X: Cleopatra s Lookout 27
Area XI: Biscuit Hill 28
Area XII: Buckskin Peak 28
Area XIII: Red Mountain 30
Summary 31
Page
Structural analysis—Continued
Mesoscopic fabric—Continued
Fabric of the Vulcan Peak area 32
Petrofabric studies 33
Introduction 33
Description of microfabrics 33
Sample J1 33
Sample J2 34
Sample J3 35
Sample J4 36
Sample J5 37
Sample J6 37
Sample J7 38
Sample J8 39
Discussion of olivine fabrics 40
Summary 42
Origin 42
Deformation 1 42
Deformation 2 42
Deformation 3 42
Deformation 4 43
Deformation 5 43
Deformation 6 43
Deformation 7 43
Deformations 8 and 9 43
Age of crystalline deformations 43
Limitations of t his study 43
References cited 44
ILLUSTRATIONS
Page
FIGURE 1 Index map of northern California and southern Oregon, showing location of study area 3
2 Geologic sketch map of study area, show ing internal macroscopic structures of the Josephine Peridotite 4
3-5 Photographs of:
3 Chromitiferous dunite showing chromite-net and occluded-silicate textures 6
4 View northward from Red Mountain toward Rattlesnake Mountain 7
5 Orthopyroxenite layers and dunne layers in harzburgite 9
6 Sketches illustrating layers in harzburgite exhibiting pullapart structure 10
7-9 Photographs of:
7 Chromite foliation in dunite at h gh angle to dumte-harzburgite contact 10
/ 8 Deformed chromite-net texture in dunite 11
9 Flattened rods of chromite in duitite at an angle to dunite-harzburgite contact 11
10-12 Sketches illustrating:
10 Isoclinal folds in peridotite 11
11 Refolded early isoclinal folds in peridotite 12
12 Open folds in peridotite 12
13-19 Photographs of:
13 Chromite in dunite 13
14 Irregular dunite body in harzburgite 14
15 Dunite dike in harzburgite ^ 14
16 Intersecting dunite dikes in han-ourgite 15
17 Warped orthopyroxenite dike 15
18 Faulted orthopyroxenite dike 15
19 Composite dunite-orthopyroxenii e dike in harzburgite 16
20 Fabric diagrams for area I 16
21 Fabric diagrams for subarea Ila - 19
I I I
figentum:
IV CONTENTS
FIGURE 22 Photograph of multiply folded peridotite 20
23 Photograph of multiply folded peridotite viewed along late-fold hinge 20
24-29 Fabric diagrams for:
24 Subarea lib 21
25 Subarea lie 22
26 Area III 22
27 Area IV 23
28 Area V 23
29 Area VI 24
30 Photograph of harzburgite pod in dunite 24
31-37 Fabric diagrams for:
31 Area VII 25
32 Area VIII 26
33 Area IX 27
34 Area X 27
35 Area XI 28
36 Area XII 29
37 Area XIII 31
38 Diagram of poles to mean attitudes of subpopulations of layering and foliations in areas I, II, and V through XIII 32
39 Synoptic diagram of linear elements in ;ireas I through XIII 32
40 Photomicrograph of thin section of sample Jl, a harzburgite 33
41 Olivine-fabric diagrams for sample J1 34
42 Photomicrograph of thin section of sample-J2, a dunite 34
43 Olivine-fabric diagrams for sample J2 35
44 Photomicrograph of thin section of sample J3, a dunite 35
45 Olivine-fabric diagrams for sample J3 35
46 Photomicrograph of thin section of sample J4, a dunite 36
47 Olivine-fabric diagrams for sample J4 36
48 Photomicrograph of thin section of sample J5, a dunite 37
49 Olivine-fabric diagrams for sample J5 37
50 Photomicrograph of thin section of sample J6, a dunite 38
51 Olivine-fabric diagrams for sample J6 38
52 Photomicrograph of thin section of sample J7, a dunite 38
53 Olivine-fabric diagrams for sample J7 39
54 Photomicrograph of thin section of sample J8, a wehrlite 39
55 Diopside-fabric diagrams for sample J8 39
56 Synoptic diagram of Z maxima for samples J1 through J7 41
TABLE
Page
TABLE 1 Summary of structures, and the oriental ions and ages of structures, for deformations affecting the Josephine Peridotite 8
|
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| genre | Josephine-Peridotit gnd |
| genre_facet | Josephine-Peridotit |
| id | DE-604.BV000813875 |
| illustrated | Illustrated |
| indexdate | 2024-12-20T07:27:07Z |
| institution | BVB |
| language | English |
| oai_aleph_id | oai:aleph.bib-bvb.de:BVB01-000510487 |
| oclc_num | 246354857 |
| open_access_boolean | |
| owner | DE-12 DE-19 DE-BY-UBM |
| owner_facet | DE-12 DE-19 DE-BY-UBM |
| physical | IV, 45 S. Ill., graph. Darst., Kt. |
| publishDate | 1987 |
| publishDateSearch | 1987 |
| publishDateSort | 1987 |
| publisher | US Gov. Print. Off. |
| record_format | marc |
| series | Geological Survey <United States>: Geological Survey professional paper |
| series2 | Geological Survey <United States>: Geological Survey professional paper |
| spellingShingle | Evans, James George Deformation of the Josephine Peridotite, California and Oregon Geological Survey <United States>: Geological Survey professional paper Struktur (DE-588)4058125-1 gnd |
| subject_GND | (DE-588)4058125-1 |
| title | Deformation of the Josephine Peridotite, California and Oregon |
| title_auth | Deformation of the Josephine Peridotite, California and Oregon |
| title_exact_search | Deformation of the Josephine Peridotite, California and Oregon |
| title_full | Deformation of the Josephine Peridotite, California and Oregon by James G. Evans |
| title_fullStr | Deformation of the Josephine Peridotite, California and Oregon by James G. Evans |
| title_full_unstemmed | Deformation of the Josephine Peridotite, California and Oregon by James G. Evans |
| title_short | Deformation of the Josephine Peridotite, California and Oregon |
| title_sort | deformation of the josephine peridotite california and oregon |
| topic | Struktur (DE-588)4058125-1 gnd |
| topic_facet | Struktur Josephine-Peridotit |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=000510487&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
| volume_link | (DE-604)BV000005472 |
| work_keys_str_mv | AT evansjamesgeorge deformationofthejosephineperidotitecaliforniaandoregon |