frank mathias, fmathias@kent alison j. smith department of geology kent state university
DESCRIPTION
A PLIO-PLEISTOCENE RECORD OF LACUSTRINE OSTRACODES FROM BUTTE VALLEY, CALIFORNIA: FAUNAL RESPONSES TO TECTONIC AND CLIMATIC CHANGE. Frank Mathias, [email protected] Alison J. Smith Department of Geology Kent State University. Acknowledgments: USGS David Adams Claire Carter Rick Forester. - PowerPoint PPT PresentationTRANSCRIPT
A PLIO-PLEISTOCENE RECORD OF LACUSTRINE OSTRACODES FROM BUTTE VALLEY, CALIFORNIA: FAUNAL RESPONSES TO TECTONIC AND CLIMATIC
CHANGE
Frank Mathias, [email protected] J. SmithDepartment of GeologyKent State University
Acknowledgments:USGSDavid AdamsClaire CarterRick Forester
Version 1Forester et al., 2005www.kent.edu/NANODe
NANODe
North AmericanNon-MarineOstracode Database
N
1 km
Butte Valley cross-section, (Woods, 1960)
Sedimentation rate diagram; Butte Valley core (Roberts et al., 1996)
Farthest neighbour (constrained)
Squared Chord
8531_J
8530c_J8530b_J
8530a_J3464e_J
3464d_J3464c_J
3464b_J
3464a_J3463bestones_J
3463r_J3463_J
3463_J limnocythere3462r_J
3462-3464_J8529b_J
8529a_J10684b_J
10684a_J10683_J
10682_J
8518_J10679_J
10678_J8507_J
10677_J8506_J
10676_J7566_J
10674_J10673_J
7565b_J7565a_J
7564_J7563_J
10672_J
7562_J10671_J
8505_J10670_J
10669_J10668_J
10667_J10666_J
8504_J10665_J
10664_J10663_M
10662_M*
10661_M10656_M*
8502_M*10655_M
8501_M10653_M
8500_M8498_M
8497_M*8496_M
8495_M*8494_M
8439_B
8409_B8390_B*
8389_B*8388_B*
10652_B*8460_B
10651_B*10650_B*
10649_B*10648_B*
8369_B*10647_B*
10646_B*
10645_B*10160_B*
10158_B10156_B *
8350_B10152_B
10151_B8347_B *
10150_B10149_B
8345_B8337_B
8336_B
8335_B8310_B
8451_B
360 300 240 180 120 60 0
Farthest neighbour (constrained)
Squared Chord
8531_J
8530c_J8530b_J
8530a_J3464e_J
3464d_J3464c_J
3464b_J
3464a_J3463bestones_J
3463r_J3463_J
3463_J limnocythere3462r_J
3462-3464_J8529b_J
8529a_J10684b_J
10684a_J10683_J
10682_J
8518_J10679_J
10678_J8507_J
10677_J8506_J
10676_J7566_J
10674_J10673_J
7565b_J7565a_J
7564_J7563_J
10672_J
7562_J10671_J
8505_J10670_J
10669_J10668_J
10667_J10666_J
8504_J10665_J
10664_J10663_M
10662_M*
10661_M10656_M*
8502_M*10655_M
8501_M10653_M
8500_M8498_M
8497_M*8496_M
8495_M*8494_M
8439_B
8409_B8390_B*
8389_B*8388_B*
10652_B*8460_B
10651_B*10650_B*
10649_B*10648_B*
8369_B*10647_B*
10646_B*
10645_B*10160_B*
10158_B10156_B *
8350_B10152_B
10151_B8347_B *
10150_B10149_B
8345_B8337_B
8336_B
8335_B8310_B
8451_B
360 300 240 180 120 60 0
Butte Valley Core
Brunhes
Matuyama
Gauss
0.78 my
2.59 my
2.0 my1.06 myJaramillo
Olduvai
3.22
3.33
3.12
3.05
2.59
KAENA
MAMMOTH
Farthest neighbour (constrained)
Squared Chord
8531_J8530c_J8530b_J8530a_J3464e_J3464d_J3464c_J3464b_J3464a_J3463bestones_J3463r_J3463_J3463_J limnocythere3462r_J3462-3464_J8529b_J8529a_J10684b_J10684a_J10683_J10682_J8518_J10679_J10678_J8507_J10677_J8506_J10676_J7566_J10674_J10673_J7565b_J7565a_J7564_J7563_J10672_J7562_J10671_J8505_J10670_J10669_J10668_J10667_J10666_J8504_J10665_J10664_J10663_M10662_M*10661_M10656_M*8502_M*10655_M8501_M10653_M8500_M8498_M8497_M*8496_M8495_M*8494_M8439_B8409_B8390_B*8389_B*8388_B*10652_B*8460_B10651_B*10650_B*10649_B*10648_B*8369_B*10647_B*10646_B*10645_B*10160_B*10158_B10156_B *8350_B10152_B10151_B8347_B *10150_B10149_B8345_B8337_B8336_B8335_B8310_B8451_B
360 300 240 180 120 60 0
Lowest Assemblage
Tuberocypris brighti
Cytherissa lacustris
Gauss
Farthest neighbour (constrained)
Squared Chord
8531_J8530c_J8530b_J8530a_J3464e_J3464d_J3464c_J3464b_J3464a_J3463bestones_J3463r_J3463_J3463_J limnocythere3462r_J3462-3464_J8529b_J8529a_J10684b_J10684a_J10683_J10682_J8518_J10679_J10678_J8507_J10677_J8506_J10676_J7566_J10674_J10673_J7565b_J7565a_J7564_J7563_J10672_J7562_J10671_J8505_J10670_J10669_J10668_J10667_J10666_J8504_J10665_J10664_J10663_M10662_M*10661_M10656_M*8502_M*10655_M8501_M10653_M8500_M8498_M8497_M*8496_M8495_M*8494_M8439_B8409_B8390_B*8389_B*8388_B*10652_B*8460_B10651_B*10650_B*10649_B*10648_B*8369_B*10647_B*10646_B*10645_B*10160_B*10158_B10156_B *8350_B10152_B10151_B8347_B *10150_B10149_B8345_B8337_B8336_B8335_B8310_B8451_B
360 300 240 180 120 60 0
L. sappaensis
L. certiotuberosa
L. platyforma
Upper Assemblage
Brunhes
Matuyama
0.78 my
2.59 myGauss
0.01
0.1
1
10
100
1000
10000
100000
1 10 100 1000 10000 100000 1000000
Log TDS mg/l
Log
(HCO
3/Ca
) meq
/lAll NANODe sites
Bicarb.enrichment
Bicarb.depletion
Cluster 2-with photos of key sp
0.01
0.1
1
10
100
1000
10000
100000
1 10 100 1000 10000 100000 1E+06
All NANODeSites
Sites with C.candida
Sites with L.itasca
Sites with L.ceriotuberosa
Sites with L.sappaensis
Sites with L.staplini
0.01
0.1
1
10
100
1000
10000
100000
1 10 100 1000 10000 100000 1E+06
All NANODeSites
Sites with C.candida
Sites with L.itasca
Sites with L.ceriotuberosa
Sites with L.sappaensis
Sites with L.stapliniL
og H
CO
3/C
a (
meq
/l)
Log TDS mg/l
ca 3.3 my
ca 2.1 my
ca 0.78 my
•In the late-Pliocene, and likely long before, a stable, permanent freshwater lake existed in Butte Valley as indicated by the presence of syngamic C. lacustris.
•Plio/Pleistocene tectonic forces (extension and uplift) coincident with a shift in paleoclimate in the western U.S. amplified effects on lake hydrochemistry through the Pleistocene.
•Ostracodes tracked this hydrochemical shift and provide a window into the tectonic and climatic changes in the lake through time.