Structural Measurement Atlas
Atlas / Sources / Oregon DOGAMI (OGDC-8)

Oregon DOGAMI (OGDC-8)

29,982 structural measurements in the Atlas come from Oregon DOGAMI (OGDC-8), harvested across 241 published maps and data releases and reconciled into the Atlas schema.

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100% of this source's records state their own azimuth convention in the published data. Where a convention is not stated the Atlas infers it from the source's documented practice and records that it did so — which is why every row keeps a link back to the map it came from, and why a measurement that matters should be checked against that map.

What it contains

Measurement typeGeometryMeasurementsShare
Bedding Planar — strike and dip 27,91193%
Foliation Planar — strike and dip 8423%
Lineation (mineral, stretching) Linear — trend and plunge 5142%
Cleavage Planar — strike and dip 4471%
Other Planar — strike and dip 147<1%
Joint Planar — strike and dip 112<1%
Fault plane Planar — strike and dip 5<1%
Slickenline Linear — trend and plunge 3<1%
Fold hinge / axis Linear — trend and plunge 1<1%

Where it is

StateMeasurementsShare
Oregon 29,940100%
Idaho 27<1%
Washington 10<1%
California 5<1%

Most-measured published maps

Published mapYearScaleMeasurements
WellRE20202020 —2,848
DickWR1965easthalf1965 —1,565
DickWR1965westhalf1965 —1,165
SnavPD1976b1976 —1,163
SnavPD1976a1976 —1,034
MadiIPUnpub— —1,021
SnavPD1976c1976 —1,012
WileTJ20112011 —917
McClJD20132013 —882
NiemAR19851985 —785
BrowCE1966a1966 —762
EvanJG19931993 —604
McClJD20102010 —594
BrowCE19771977 —534
HoovL19631963 —474

Most-measured map units

Map unitAgeLithologyMeasurements
Tyee Formation Tt Eoceneturbidite2,768
Begg Formation TRbg Triassicmixed grained sediments776
N2 magnetostratigraphic unit Tgn2 Miocenebasalt727
Brisbois Formation TRbr Triassicfine grained sediments690
Slate, argillite, chert, and conglomerate TRbs Paleozoic/Mesozoicsedimentary rocks565
Yamhill Formation Ty Eoceneslope mudstone563
Elkhorn Ridge Argillite TRPer Paleozoic/Mesozoicfine grained sediments438
Fields Creek Formation TRf Triassicfine grained sediments340
Alluvium Qa Holocenemixed grained sediments320
Siletz River Volcanics Tsr Paleocene/Eocenepillow lavas317
Lower member of the Coaledo Formation Tecl Eocenedeltaic sandstone303
Vester Formation TRv Triassicmixed grained sediments293

Other sources