
Figure 2. Map showing location of parts of
seismic-reflection profiles and photographs described in
the Structure Map discussion.
Links:
There are links on the map that will link to the indicated figures. As
the mouse is moved over
the map, links are revealed when the icon changes to
.
|

Figure 3. Segment of U.S. Geological Survey
Line P 183, a migrated, multichannel, airgun seismic reflection profile
from the eastern Juan de Fuca Strait (Figure 2).
Bold red lines
show faults and inferred faults. Arrows indicate sense of movement across.
Tops of yellow dots indicate inferred base of Quaternary deposits; tops
of blue triangles indicated
inferred base of latest Pleistocene to Holocene (post glacial) deposits.
shows syncline axis.
|

Figure 4. Faulted and fractured late Quaternary
outwash sand beds, exposed on the east coast
of Holmes Harbor within the southern Whidbey Island fault zone.
|

Figure 5. Anticline axis (dashed line) in
southern Whidbey Island fault zone, exposed on the
west coast of Whidbey Island. Gravel beds at right fill a large steep
channel cut into fine-
grained beds at left. Both the gravel and the fine-grained strata are
inferred to be glaciomarine
drift that occurs at the top of the Double Bluff drift (~150 ka?). Bluff
height is about 50 metres.
|

Figure 6. Segment of U.S. Geological Survey
Line P127, a migrated, multichannel, airgun seismic-reflection profile
from the eastern Juan de Fuca Strait (Figure 2).
Bold red lines show
faults and inferred faults. Tops of yellow dots indicate inferred base
of Quaternary deposits; tops of blue triangles indicate inferred base
of latest Pleistocene to Holocene (postglacial)
deposits; and prominent water-bottom multiples are shown by "m".
|

Figure 7. Segment of Industry Line 2, a migrated,
multichannel, seismic-reflection profile from the eastern Juan de Fuca Strait area (Figure 2). Dashed red lines show faults.
Top of yellow
dots indicates inferred base of Quaternary deposits.
|
Figure 8. Segment of Industry Line 2, an unmigrated,
multichannel, seismic-reflection profile from the eastern Juan de Fuca Strait
area (Figure 2). Dashed redlines show faults. Arrows indicate
sense of movement across faults. Top of yellow dots indicated inferred base
of Quaternary deposits. This line was described in detail in Johnson and
others (1996). |
Figure 9. Segment of U. S. Geological Survey
Line P176, a migrated, multichannel, airgun seismic-reflection profile
from east of Whidbey Island (Figure 2). Bold red lines
show faults and inferred faults. Arrows indicate sense of
movement across faults. Tops of yellow dots indicate inferred base of
Quaternary deposits; tops of blue triangles indicate inferred base of
latest Pleistocene to Holocene (postglacial) deposits; and prominent water-bottom
multiples
are shown by "m". Location of anticline axis is shown above
profile.
|

Figure 10. Exposures of late Quaternary strata
within the Strawberry Point fault zone at Strawberry Point on northeastern
Whidbey Island.
A. Northwest-dipping strata (~45°) of the ~100 ka Whidbey Formation,
consisting of mud, sand, and woody peat (red arrow above shovel).
Shovel handle is divided into 10 cm increments.
B. "Exposure of highly fractured friable sand of the Whidbey Formation.
|

Figure 11. Folded (dip ~ 24°) and fractured
late Quaternary strata (~21 ka) exposed at
Utsalady Point within the Utsalady Point fault zone, northeastern Camano
Island (Figure 2).
|

Figure 12. Segment of U.S. Geological Survey
Line P168, an unmigrated, high-frequency,
geopulse, seismic-reflection profile (Figure 2). Profile
shows break in slope and contrast in
sediment reflection properties that coincides with the Devils Mountain
fault.
|

Figure 13. Segment of U.S. Geological Survey
Line P166, a migrated, multichannel, airgun seisminc-reflection profile
from the eastern Juan de Fuca Strait area (Figure 2).
Bold red lines show faults and inferred faults. Arrows show sense of movement
on faults. Tops of yellow dots indicate inferred base of Quaternary deposits;
tops of blue
triangles indicate inferred base of latest Pleistocene to Holocene (postglacial)
deposits; and prominent water-bottom multiples are shown by "m".
Location of anticline
axis is shown above the profile.
shows anticline axis.
|

Figure 14. Segment of Industry Line 1, an
unmigrated, multichannel, airgun seismic-
reflection profile from the eastern Juan de Fuca Strait area (Figure
2). Dashed red lines show
fault. Arrows indicate sense of movement across fault. Top of yellow dots
indicates inferred
base of Quaternary deposits. Location of anticline axis
is shown above the profiles.
|

Figure 15. Segment of SHIPS Line JDF 4 (Figure
2), a migrated, multichannel, seismic-
reflection profile from the eastern Juan de Fuca Strait area. Dashed
red line shows
inferred fault. Top of yellow dots indicates inferred base of Quaternary
deposits.
|
Figure 16. Segment of Geological Survey of
Canada Line 35 (Figure 2), a high-resolution, multichannel,
migrated arigun seismic-reflection profile from the eastern Juan de Fuca Strait area. Dased red line
show inferred faults. Arrows indicate sense of movement across fault.
Top of yellow dots indicates inferred base of Quaternary deposits; top
of blue triangles indicate inferred base of latest Pleistocene to
Holocene (postglacial) deposits; and prominent water-bottom multiples
are shown by "m".
|