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Xerox University Microfilms INFORMATION TO USERS This material was produced from a microfilm copy of the original document. While the most advanced technological means to photograph and reproduce this document have been used, the quality is heavily dependent upon the quality of the original submitted. The following explanation of techniques is provided to help you understand markings or patterns which may appear on this reproduction. 1. The sign or "target" for pages apparently lacking from the document photographed is "Missing Page(s)". If it was possible to obtain the missing page(s) or section, they are spliced into the film along with adjacent pages. This may have necessitated cutting thru an image and duplicating adjacent pages to insure you complete continuity. 2. When an image on the film is obliterated with a large round black mark, it is an indication that the photographer suspected that the copy may have moved during exposure and thus cause a blurred image. 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Xerox University Microfilms 300 North Zeeb Road Ann Arbor, Michigan 48100 76- 24,576 CARNEIN, Carl Robert, 1943- GEOLOGY OF THE SUNCOOK 15-MINUTE QUADRANGLE NEW HAMPSHIRE. The Ohio State University, Ph.D., 1976 Geology Xerox University Microfilmst Ann Arbor, Michigan 48106 i GEOLOGY OF THE SUNCOOK 15-MINUTE QUADRANGLE NEW HAMPSHIRE DISSERTATION Presented in Partial Fulfillment of the Requirements for the Degree Doctor of Philosophy in the Graduate School of The Ohio State University By Carl Robert Carnein, B.S., M,Sc. # * * * * The Ohio State University 1976 Reading Committee: Approved By Ernest G. Ehlers George E. Moore, Jr. Douglas E. Pride (/Adviser V Department of Geology and jlineralogy ACKNOWLEDGMENTS The author is indebted to Professor George E. Moore, Jr., of The Ohio State University for his assistance both in the field and in the laboratory# Professor Glenn W. Stewart of the University of New Hampshire provided helpful suggestions in the field on two occasions# Financial assistance was provided by the Orton Fund of The Ohio State University and by a grant from the Penrose Bequest of The Geological Society of America. VITA November 2, 1943 ........ Born - Philadelphia, Pennsylvania 1964 .....................B.S., The Ohio State University, Columbus, Ohio 1965-1967................ Teaching Assistant, Department of Geology, The Ohio State University, Columbus, Ohio 1967 .....................M.Sc., The Ohio State University, Columbus, Ohio 1967-1969* ............ Teaching Assistant, Department of Geology, The Ohio State University, Columbus, Ohio 1970-1975. .......... .Assistant Professor, Department of Geology, Waynesburg College, Waynes- burg, Pennsylvania PUBLICATION Bull, C., and C„ R. Carnein, 1968, The mass balance of a cold glaciers Meserve Glacier, south Victoria Land, Antarctica: I.S.A.G.B. Symposium, Hanover, N. H., 3-7 September, 1968, p. 429-446. FIELDS OF STUDY Major Field: Geology' Studies in Glaciology. Professor Colin Bull Studies in Structural Geology, Petrology, and Field Geology. Professor George E. Moore, Jr. TABLE OF CONTENTS Page ACKNOWLEDGMENTS......................'........................ii VITA ................................................. iii LIST OF TABLES .............................................. LIST OF FIGURES ...................... viii Chapter I. INTRODUCTION ...................................... I Purpose and Scope............ I Location and Geography ................... 2 Methods of Investigation............ 4 Previous Work .......... 4 II. STRATIGRAPHY....................................... 7 Berwick Formation............................... 7 Distribution.......... 7 Lithology ............................... 8 Metamorphism................................. ... T h i c k n e s s ................................. 15 Correlation and A g e ........................... 16 V Littleton Formation............................... 19 Distribution ........................... 19 L i t h o l o g y ................ 21 Pittsfield Member ........................... 21 Jcnness Pond Member...................... 30 Metamorphism....................................40 Thickness* .......... 46 Correlation and Age ............ •••••• 4 7 Massabesic Gneiss ............................... 51 Distribution ................................. 51 L i t h o l o g y .................... 52 Foliated Microcline Granite .................62 Origin of the Massabesic Gneiss ••••••• 57 iv Page Previous W o r k ................................. 67 Mesoscopic Features ............ 72 Small-Scale Compositional Banding............ 72 Schollen Structure •••••••• ......... 73 Folded Structure ........................... 74 Schlieren Structure.................... 77 Ptygmatic Structure • •..»•••••••• 78 Relations of Massabesic Gneiss with* • • • • 84 Pegmatite and Foliated Granite •••••• Broad Compositional Variations ............. 89 Contact Relations •• 97 Microscopic Features ......................... 99 Relations with Q-Ab-Or System ................. 104 Summary and Conclusion * 110 III, PLUTONIC ROCKS ............................................ 113 Concord Granite ....................... ...... 113 Distribution................ * ...................113 Lithology.........................................115 Age Relations .................. ....... 118 Microcline-Oligoclase Pegmatite .............121 Distribution ................... ....... 1 2 1 L i t h o l o g y ........ * ............................. 121 Age Relations .............. * .................. 123 Post-Orogenic Dikes and Sills ....................... 125 Distribution .................... 125 L i t h o l o g y ....................................... 127 B a s a l t ....................................... 127 Spessartite ................................. 131 D i a b a s e ..................................... 133 Andesite ....................... ...... 1 3 3 Age Relations ................................... 133 Structural Control ............................. 134 IV. STRUCTURE ................................................138 Introduction ................ 138 Mesoscopic Structures ............................... 140 B e d d i n g ......................................... 140 Rock Cleavage and Schistosity...................141 Lineations.......... .............. * ............ 149 Minor Folds ......................... 150 Joints ............ 152 v Page Silicified Fault Zones • ........................... 154 Distribution.................... 154 Lithology ...... 1 5 7 Attitude and Displacement of Faults • • • • * 159 Age Relations .............. j.61 Other Faults ..... ............ ........ 1 6 3 V. SUMMARY AND CONCLUSIONS............................... 165 Environment of Deposition of the Metasediments . 165 Source of the Metasediments ............ 166 Geologic History and Regional Synthesis. • ........ 172 Previous W o r k ............ * 172 Application to the Suncook Quadrangle........ 181 LIST OF REFERENCES.......................................... 187 vi LIST OF TABLES Page Table 1 Approximate Modes of the Upper Member of the 9 Berwick Formation Table 2 Approximate Modes, Pittsfield Member of the 22 Littleton Formation Table 3 Approximate Modes, Jenness Pond Member of the 35 Littleton Formation Table 4 Approximate Modes of the Massabesic Gneiss 53 Table 5 Approximate Modes of the Foliated Microcline 63 Granite Table 6 Approximate Modes for Lime-Silicate Rocks of 94 the Massabesic Gneiss Table 7 Petrographic Characteristics of Typical 111 Migmatites Table 8 Approximate Modes of the Concord Granite 116 Table 9 Approximate Modes of Post-Orogenic Dikes 128 and Sills vii LIST OF FIGURES Page Figure 1. Index map showing the Suncook quadrangle 3 (ruled) and other areas referred to in this report: Manchester quadrangle (M), Haverhill quadrangle (H), Mount Pawtuckaway quadrangle (MP), Alton quadrangle (A), and Gilroanton quadrangle (G). Figure 2 . Locations and trends of glacial striae in the 5 Suncook quadrangle. Figure 3 Typical thin-bedded schist of the Jenness Pond 31 memberf 1.1 miles east of Epsom Mt., Epsom. Figure 4. Crenulated silvery medium-grained mica schist 32 of the Jenness Pond member, about 1.25 miles east of Epsom Mt., in the town of Northwood. Figure 5 . Alternating fine-grained schistose gneiss and 33 medium-grained mica schist of the Jenness Pond member. The schist contains "knots" composed of quartz, muscovite, and sillimanite. Location: in town of Northwood, about 1.2 miles east of Epsom Mt., Epsom. Figure 6 . Fine-grained mica gneiss of the Jenness Pond 37 member, showing nearly horizontal bedding, and axial-plane cleavage dipping steeply to the west.
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