STRATIGRAPHY AND PROVENANCE OF CONGLOMERATE BEDS IN THE

STRATIGRAPHY AND PROVENANCE OF CONGLOMERATE BEDS IN THE

STRATIGRAPHY AND PROVENANCE OF CONGLOMERATE BEDS IN THE PUENTE FORMATION NEAR PUDDINGSTONE RESERVOIR, EASTERN LOS ANGELES COUNTY, CALIFORNIA. LOCATION MAP OF STUDY AREA 118 30' 117 45' 118 00' 117 00' 117 30' 34 30' SAN GABRIEL MOUNTAINS SAN BERNARDINO MOUNTAINS 34 15' GA BR IE L LOS ANGLES N SA JO SE STUDY AREA S LL HI PU EN TE

SAN 34 00' R VE RI SAN DIMAS ONTARIO POMONA RI VE R PASADENA CHINO VALLEY ANA HI LL S SA A NT CORONA KEY: LONG BEACH 33 45' PACIFIC OCEAN A AN S

A IN N T TA SA OUN M SANTA ANA Known middle to upper Miocene shoreline and mainland area of Miocene sediments (Woodford, 1946) LOCATION MAP OF FRANK G BONELLI PARK Puddingstone Reservoir FRANK G BONELLI REGIONAL COUNTY PARK 1100 SHELTONS TYPE SECTION FOR EASTERN SAN JOSE HILLS Red area represents the rocks found within the study are GEOLOGIC MAP OF STUDY AREA Tgv B Puddingstone Reservoir ss 22 ive r D

A 100 0 1 TCg A 25 TCg A 39 ss 60 Wate rs Tp 2 ss TCg B 39 U 19 48 85 D 30 70

25 40 35 33 17 30 20 21 Tp ss 49 TCg C 30 40 38 29 41 11 00 46 34 g gin a R ss 24 30

3 ss 33 ss 20 40 TCg A 20 B" 10 Verde DriTve ss p ay w ee 30 5 57 Fr Via 1000 21 ss

Tgv 6 28 Tp 20 35 5 TCg C 19 60 25 30 A' B' 4 TCg C ss 15 16 Tp 25 18 Tgv 1100 A" 1200 LOCATION 1 LOCATION 2

LOCATION 3 LOCATION 4 LOCATION 5 LOCATION 6 GEOLOGIC MAP OF BONELLI PARK NEAR PUDDINGSTONE RESERVOIR, CALIFORNIA EXLPANATION Tgv B Puddingstone Reservoir A ss 22 100 0 25 T Cg A 1 85 D U T Cg A 19 T Cg C 39

Puente Formation (T p): siltsones, sandstones and shales Sandstone (ss): mapable sandstone beds found in the Puente Formation. Tp ss 60 48 Tp 30 39 ss 2 gA TC ss 70 30 TCg C 35 33 17 20 25 40 21

Tp ss 5 19 60 25 30 40 A' T Cg C 24 30 3 Glendora Volcanics (T gv ): intermediate to felsic volcanics, breccias, flows, and agglomerates. 15 -16 Ma. (weigand, 1994; Nourse, 1998) Tgv ss 46 30 11 00 34 41 33 20

Tp T gv 6 28 T Cg C 49 38 29 ss B' T Cg A 20 1000 21 ss 35 T Cg B ss 40 20 Conglomerate T Cg (B)): Mostly porphyritic andesite seprated by sandstone horizon. All in sandy matrix. Conglomerate (TCg (A)): Mostly rhyolite to dacite. Found in well

cemented sandy matrix. 4 2 B" 10 GEOLOGIC SYMBOLS N 40 14 Tp TCg A Conglomerate (TCg (C)): mostly basement clasts with minor amounts of volcanics depending on location. All found in sandy matrix. C ss 3 8 30 AL IF 25 OR NIA Strike and dip of beds 36 l oc at i on o f study area 5

Tp 34 50 T Cg C ss 4 16 0 150 m il es 1 22 25 18 15 Tgv 1100 1200 A" 120 118 116 Syncline, with plunge direction, dashed where approximately located magnetic north declination, center of map 0 500 Anticline, with plunge direction, dashed where

approximately located 1000 ft 1 inch equals 500 feet. Or, 1 inch equals 150 meters. no vertical exaggeration Contact CROSS SECTION A - A", ALONG HIGHWAY 57 N 10 W A N 31 W Contact where approximatly located A' A" U D 1200 Ft. 1200 Ft. 1000 Ft. 1000 Ft. 800 Ft. Fault, showing dip, dashed where approximately located 800 Ft. Park roads Highways Stream and Lake line locations

CROSS SECTION B - B", NEAR PUDDINGSTONE RESERVOIR N 56 W B N 41 W B' 1 B" Conglomerate clast sampling locations A B 1200 Ft. 1200 Ft. 1000 Ft. 1000 Ft. 800 Ft. Cross section lines Geology by: McLarty, Andrew H. and Nourse, Jonathan A. Department of geologic sciences, California State Polytechnic University. Pomona California. 2000. CROSS SECTION A - A", ALONG HIGHWAY 57 N 10 W A N 31 W A' A" 1200 Ft. 1200 Ft.

1000 Ft. 1000 Ft. 800 Ft. 800 Ft. CROSS SECTION B - B", NEAR PUDDINGSTONE RESERVOIR N 56 W B N 41 W B' B" 1200 Ft. 1200 Ft. 1000 Ft. 1000 Ft. 800 Ft. STRATIGRAPHY STRATIGRAPHIC SECTION, EASTERN PUENTE - SAN JOSE HILLS NEAR PUDDINGSTONE RESERVOIR Q Per. Fm. Th. 100 - 155 Ft. 700 -1400 Ft. 100 -200 Ft. 280 - 344 Ft. 787 - 3497 Ft. GLENDORA VOL. 100 -240 Ft.

PUENTE FORMATION UPPER MIOCENE - LOWER PLIOCENE MIDDLE MIOCENE DESCRIPTION Alluvium (Qal) and thick soil horizon. K OLIG. Mz STRATIGRAPHIC SECTION McLarty, 2000 Conglomerate (T Cg (C)): mostly basement clasts with abundant volcanic clasts in higest and lowest levels, all in sandy maxrix. Puente Formation (Tp): siltstone, sandstone, and shale Conglomerate (T Cg (B)): Two beds with predominantly porphyritic andesite clasts separated by sandstone horizon, all in sandy matrix. Puente Formation (Tp): siltstone, sandstone, and shale Conglomerate (T Cg (A)): Mostly rhyolite to dacite clasts, all in sandy maxrix. Glendora Volcanics (Tgv): intermediate to felsic volcanic, breccias, flows, and agglomerates. 15 16 Ma. (Weigand et al, 1994; Nourse et al. 1998) Mountian Meadow dacite, 27 28 Ma (Hazelton, pers. comm.) Basement complex (bc), late Cretaceous, quartz diorite / tonalite STEREONET RESULTS N

Equal Area KEY siltstone sandstone conglomerate Figure 5a. - poles to bedding in Puente Formation south and west Puddingstone Reservoir. Plunging fold axis : 235 / 3SW N Equal Area Plunging fold axis : 125 / 31SE Figure 5b. - poles to bedding of small fold found in the Puente Formation near south shoreline, Puddingstone Reservoir. SUMMARY OF ALL CLAST COUNTS FROM SIX CONGLOMERATE BEDS IN THE STUDY AREA Name of Clast Location 1 Location 2 Location 3 Location 4 Location 5 Location 6 Rhyolite - dacite 53.6 7 0 9.7 8.8 47.7 Porphyritic andes ite 21.7 47.1 9.2 4 5.6 28.2 Aphanitic andesite 18.3 0

5.7 0 0 16.5 Basaltic andes ite 6 6.4 0 0 0 6.8 Porphyritic basalts 0.4 0 0 0 0 0.8 Andesite 0 26.7 0 7.6 6.3 0 Flow banded rhyolite 0 9.3 0 3 4.8 0 Basalt - vasicular basalts 0 3.5 0 5.9 0 0 Agglomerate 0 0 0 10.7 0 0

Granitoids (granite, tonolite, aplite) 0 0 25.3 13.6 15.9 0 Diorite - gabbro 0 0 13.8 6.8 8 0 Quartzite 0 0 6.9 4.9 4.8 0 Gneis s 0 0 5.7 8.8 18.3 0 Amphiblite schis t 0 0 0 0 1.3 0 Mylonite 0 0 33.4 25 26.2 0 total % 100 100 100

100 100 100 N number of clasts collected 235 172 157 104 126 103 PERCENT OF TOTAL CLASTS AT 6 CONGLOMERATE LOCATIONS Abundance of Clasts at 6 Conglomerate Locations 45 30 15 0 Location 1 Location 2 Location 3 Location 4 Location 5 Rhyolite - dacite Porphyritic andesite Aphanitic andesite Basaltic andesite Porphyritic basalts Andesite Flow banded rhyolite

Basalt - vasicular basalts Agglomerate Granitoids (granite, tonolite, aplite) Diorite - gabbro Quartzite Gneiss Amphiblite schist agglomerate Location 6 SUMMARY OF ONLY VOLCANIC, PLUTONIC, AND METAMORPMIC CLAST COUNTS FROM SIX CONGLOMERATE BEDS IN STUDY AREA Name of Clast location 1 location 2 location 3 location 4 location 5 location 6 Volcanics 100 100 40.9 25.5 100 14.9 Plutonics 0 0 39.1 20.4 23.9 0 Metamorphics 0 0 38.7 50.6 0 46 total %

100 100 100 100 100 100 235 172 104 126 103 N numb er of clasts collected 157 PERCENT OF TOTAL CLASTS AT 6 CONGLOMERATE LOCATIONS Percent of total clasts at 6 conglomerate locations. 100 Percent of total clasts counted 80 60 40 20 0 location 1 location 2 location 3 location 4 location 5 Locations within study area Volcanics Plutonics Metamorphics

location 6 Location 1 55 50 45 Percent of 235 total clasts counted 40 PLUTONICS VOLCANICS METAMORPHICS 35 30 25 20 15 10 5 0 Rhyolite dacite Porphyritic andesite Aphanitic andesite Basaltic andesite

Porphyritic basalts Andesite Flow banded rhyolite Basalt Granitoids vasicular Agglomerate (granite, basalts tonolite, aplite) Clast lithologies Diorite gabbro Quartzite Gneiss Amphiblite schist Mylonite Location 2 55 50 45 Percent of 172 total clasts counted 40 VOLCANICS PLUTONICS METAMORPHICS 35 30 25

20 15 10 5 0 Rhyolite dacite Porphyritic andesite Aphanitic andesite Basaltic andesite Porphyritic basalts Andesite Flow banded rhyolite Basalt Granitoids vasicular Agglomerate (granite, basalts tonolite, aplite) Clasts lithologies Diorite gabbro Quartzite Gneiss Amphiblite schist Mylonite Location 3 55

50 45 40 Percent of 157 clasts counted VOLCANICS PLUTONICS MEATMORPHICS 35 30 25 20 15 10 5 0 Rhyolite dacite Porphyritic andesite Aphanitic andesite Basaltic andesite Porphyritic basalts Andesite Flow banded rhyolite Basalt Granitoids vasicular Agglomerate (granite, basalts tonolite, aplite)

Clast lithologies Diorite gabbro Quartzite Gneiss Amphiblite schist Mylonite Location 4 55 50 45 Percent of 104 total clasts counted 40 VOLCANICS PLUTONICS MEATMORPHICS 35 30 25 20 15 10 5 0

Rhyolite dacite Porphyritic andesite Aphanitic andesite Basaltic andesite Porphyritic basalts Andesite Flow banded rhyolite Basalt Granitoids vasicular Agglomerate (granite, basalts tonolite, aplite) Clast lithologies Diorite gabbro Quartzite Gneiss Amphiblite schist Mylonite Location 5 55 50 45 Percent of 126 total clasts counted

40 VOLCANICS PLUTONICS METAMORPHICS 35 30 25 20 15 10 5 0 Rhyolite dacite Porphyritic andesite Aphanitic andesite Basaltic andesite Porphyritic basalts Andesite Flow banded rhyolite Basalt Granitoids vasicular Agglomerate (granite, basalts tonolite, aplite) Clast lithologies Diorite gabbro

Quartzite Gneiss Amphiblite schist Mylonite Location 6 55 50 45 40 percent of 103 total clasts counted VOLCANICS PLUTONICS METAMORPHICS 35 30 25 20 15 10 5 0 Rhyolite dacite Porphyritic andesite Aphanitic andesite Basaltic andesite Porphyritic basalts Andesite

Flow banded rhyolite Basalt Granitoids vasicular Agglomerate (granite, basalts tonolite, aplite) Clast lithologies Diorite gabbro Quartzite Gneiss Amphiblite schist Mylonite BLOCK DIAGRAM DURING RELIZIAN TIME N W 18 - 15 Ma. BLOCK DIAGRAM DURING LUISIAN-MOHNIAN TIME Erosion and deposition of silt and mud from distal source. N W 15 - 11 Ma. BLOCK DIAGRAM DURING LATE MIOCENE TIME Erosion and deposition of silt and mud from

distal source. N W 11 - 7 Ma. BLOCK DIAGRAM DURING LATE MIOCENE-EARLY PLIOCENE TIME Erosion and deposition of silt and mud from distal source. N W 7 - 4 Ma. LOCATION MAP OF STUDY AREA 118 30' 117 45' 118 00' 117 00' 117 30' 34 30' SAN GABRIEL MOUNTAINS SAN BERNARDINO MOUNTAINS 34 15' GA BR IE L LOS ANGLES N

SA JO SE STUDY AREA S LL HI PU EN TE SAN 34 00' R VE RI SAN DIMAS ONTARIO POMONA RI VE R PASADENA CHINO VALLEY ANA HI LL S SA A NT

CORONA KEY: LONG BEACH 33 45' PACIFIC OCEAN A AN S A IN N T TA SA OUN M SANTA ANA Known middle to upper Miocene shoreline and mainland area of Miocene sediments (Woodford, 1946) STRATIGRAPHY STRATIGRAPHIC SECTION, EASTERN PUENTE - SAN JOSE HILLS NEAR PUDDINGSTONE RESERVOIR Q Per. Fm. Th. 100 - 155 Ft. 700 -1400 Ft. 100 -200 Ft. 280 - 344 Ft. 787 - 3497 Ft. GLENDORA VOL. 100 -240 Ft.

PUENTE FORMATION UPPER MIOCENE - LOWER PLIOCENE MIDDLE MIOCENE DESCRIPTION Alluvium (Qal) and thick soil horizon. K OLIG. Mz STRATIGRAPHIC SECTION McLarty, 2000 Conglomerate (T Cg (C)): mostly basement clasts with abundant volcanic clasts in higest and lowest levels, all in sandy maxrix. Puente Formation (Tp): siltstone, sandstone, and shale Conglomerate (T Cg (B)): Two beds with predominantly porphyritic andesite clasts separated by sandstone horizon, all in sandy matrix. Puente Formation (Tp): siltstone, sandstone, and shale Conglomerate (T Cg (A)): Mostly rhyolite to dacite clasts, all in sandy maxrix. Glendora Volcanics (Tgv): intermediate to felsic volcanic, breccias, flows, and agglomerates. 15 16 Ma. (Weigand et al, 1994; Nourse et al. 1998) Mountian Meadow dacite, 27 28 Ma (Hazelton, pers. comm.) Basement complex (bc), late Cretaceous, quartz diorite / tonalite CROSS SECTION A - A", ALONG HIGHWAY 57 N 10 W

A N 31 W A' A" 1200 Ft. 1200 Ft. 1000 Ft. 1000 Ft. 800 Ft. 800 Ft. CROSS SECTION B - B", NEAR PUDDINGSTONE RESERVOIR N 56 W B N 41 W B' B" 1200 Ft. 1200 Ft. 1000 Ft. 1000 Ft. 800 Ft. THE END

Recently Viewed Presentations

  • Introductions - JIST Career Solutions

    Introductions - JIST Career Solutions

    Title: Introductions Author: hstith Last modified by: Jennifer Gehlhar Created Date: 8/10/2005 7:43:42 PM Document presentation format: On-screen Show (4:3)
  • TEMPLATE GUIDANCE - soton.ac.uk

    TEMPLATE GUIDANCE - soton.ac.uk

    It removes the need to separately search WebCat and DelphiS. Library Search is the University Library's new search system. It provides a one-search interface across all of our library online and print content and removes the need to separately search...
  • Latent Aspect Rating Analysis without Aspect Keyword Supervision

    Latent Aspect Rating Analysis without Aspect Keyword Supervision

    Latent Aspect Rating Analysis without Aspect Keyword Supervision. Hongning Wang, Yue Lu, ChengXiangZhai {wang296,yuelu2,czhai}@cs.uiuc.edu. Department of Computer Science University of Illinois at Urbana-Champaign Urbana IL, 61801 USA
  • Personal Property Tax Abatements - Indiana

    Personal Property Tax Abatements - Indiana

    Real vs. Personal Property. The determination of whether an asset is to be assessed as real or personal property, or as an intangible asset or is subject to excise tax is an important aspect of verifying the correctness of a...
  • Chapter 2

    Chapter 2

    Boolean algebra is a mathematical system for the manipulation of variables that can have one of two values. ... This is a block diagram for a decoder. 3.5 Combinational Circuits. This is what a 2-to-4 decoder looks like on the...
  • The Enduring EQ: How does where you live

    The Enduring EQ: How does where you live

    The North and South poles, called polar regions, are at high latitudes and get very little solar energy. The middle-latitude regions, lying between the tropics and polar regions, receive varying amounts of solar energy during the year. Factors Determining the...
  • Bibliographic Databases in the Sciences and Engineering: Are ...

    Bibliographic Databases in the Sciences and Engineering: Are ...

    Bibliographic Databases in the Sciences and Engineering: Are They Going to Survive? Nevenka Zdravkovska & Bob Kackley University of Maryland, College Park, Maryland, USA
  • 13. Decay and Recycling - IGCSE Coordinated Sciences

    13. Decay and Recycling - IGCSE Coordinated Sciences

    * Boardworks GCSE Additional Science: Biology Decay and Recycling Teacher notes This nine-stage animation provides an illustrated guide to the nitrogen cycle. ... Biology Decay and Recycling Teacher notes See the Boardworks GCSE Science (Chemistry) 'Climate Change' presentation for more...