From Guccione et a

1
From Tuttle
From Guccione et al
From Holbrook et al
From Schweig
2
Wabash Valley Fault Zone
Late Wisconsin 12 ka Middle Holocene 6 ka
Late Wisconsin- Early Holocene 60-50 ka 35-25
ka Holocene
Commerce Fault Zone
FAC
Illinoian at least 55-128 ka
SE Reelfoot Rift Margin
NMSZ
Late Holocene 4 ka-present 5.5 ka and 11 ka?
Late Wisconsin- Early Holocene
Middle Holocene 5.5 ka and 6.8 ka
Modified from Holbrook
(Schwalb, 1982)
3
Digital Elevation Model of NM Region
FAC
CF
EMRRF
Marianna
From Smalley
4
Earthquake Chronology from Liquefaction Features
Ages and Sizes of Liquefaction Features
From Tuttle et al
5
From Guccione
AD 1450, 900, 2350 BC
AD 1450, 900
AD 1450
AD 1450
AD 900 or AD 300
AD 900
AD 1450
6
From Tuttle et al
7
Compound Sand Blows Clustered Earthquakes
Interpretation of Liquefaction Fields
From Tuttle
8
From Guccione
AD 1450, 900, 2350 BC
AD 1450, 900
AD 1450
AD 1450
AD 900 or AD 300
AD 900
AD 1450
9
Interpretation of Liquefaction Fields
10
Liquefaction Features 2001 Mw 7.6-7.7 Bhuj
Earthquake
From Tuttle et al., 2002
11
Reelfoot fault
40 km
Bootheel fault
Graphs from McCalpin, 1996
3.5 m
12
Earthquake Chronology from Liquefaction Features
Average Repeat Time 500 yr for past 1200 yr
13
Reelfoot Fault Slip Chronology from Mississippi
River Straightening Events
Holbrook et al., 2006
14
Late Wisconsin-Early Holocene Displacement on
Porter Gap Fault along EMRRF From Cox et al.,
2001
15
Middle Holocene Sand Blows near ERRM near
Marianna Al-Shukri et al., 2006 Tuttle et al.,
2006
4800 BC
3500 BC
Faults after Fisk, 1944 Krinitsky, 1950 Spitz
and Schumm, 1997
16
Commerce Fault and CGL
From Harrison and Schultz, 2002
From Schweig
17
Liquefaction Features Wabash River from
Earthquake Event from 6,100 Years Ago
From Bauer
18
Obermeier, 1998
5,900-7,400 rybp
6,100 rybp
3,800-8,500 rybp
3,950 rybp
6,500-7,000 rybp
12,000 rybp
19
Sources of Paleoearthquakes?
From Bauer, ISGS
20
Proposed Sources of Paleoearthquakes
Wheeler and Cramer, 2002
21
Liquefaction Features Associated with Saline
River fault zone Cox et al., 2004 and in progress
Black lines denote subsurface faults purple
lines denote surface fault exposure hachures
show areas of sand blows related to recent
seismogenic faulting
22
Wabash Valley Fault Zone
Late Wisconsin 12 ka Middle Holocene 6 ka
Late Wisconsin- Early Holocene 60-50 ka 35-25
ka Holocene
Commerce Fault Zone
FAC
Illinoian at least 55-128 ka
SE Reelfoot Rift Margin
NMSZ
Late Holocene 4 ka-present 5.5 ka and 11 ka?
Late Wisconsin- Early Holocene
Middle Holocene 5.5 ka and 6.8 ka
Modified from Holbrook
(Schwalb, 1982)