Expedition Log 05.13.15 Gulf of California 2015, Leg 7 – Seafloor Faults – Log 5 A well-oiled machine Susan von Thun writes: Over the last 10 days, we got into a very efficient groove that required coordination of everyone onboard the Western Flyer. We conducted two ROV dives each day, collecting as many cores as we can, given the time we have on the seafloor. This means that after the morning … Expedition Log 05.12.15 Gulf of California 2015, Leg 7 – Seafloor Faults – Log 4 Mysterious rock mounds Susan von Thun writes: Today we explored the San Clemente Fault Bank (see map) and were intrigued by what we found. Along the fault, we found a vast expanse of rock mounds made of some kind of precipitated mineral. The mounds formed in areas where chemicals seeping through the seafloor met with … Expedition Log 05.11.15 Gulf of California 2015, Leg 7 – Seafloor Faults – Log 3 Fault system off northern Baja California Eve Lundsten and Susan von Thun write: Today we explored another section of the fault system off northern Baja California that had been previously mapped with MBARI’s AUV. The AUV mapping surveys were conducted in areas where Chief Scientist Charlie Paull suspected that faults are present. With these one-meter-resolution … Expedition Log 05.10.15 Gulf of California 2015, Leg 7 – Seafloor Faults – Log 2 Understanding offshore faults Aaron Micallef writes: Offshore faults are important sources of earthquakes and associated tsunamis. To investigate the occurrence of offshore faults, marine geologists look for two kinds of evidence. The first is topographic, such as a linear escarpment (an elongated change in slope gradient) or abrupt changes in the form and orientation of … Expedition Log 05.07.15 Gulf of California 2015, Leg 7 – Seafloor Faults – Log 1 Sampling sediment at Coronado Canyon On this expedition we are exploring the offshore extensions of tectonic faults that cross the northern Baja California peninsula or run offshore parallel to the Baja peninsula and coastline of Southern California. These faults are believed to be part of a system of faults that extends northward, crossing the U.S.-Mexico …
Expedition Log 05.12.15 Gulf of California 2015, Leg 7 – Seafloor Faults – Log 4 Mysterious rock mounds Susan von Thun writes: Today we explored the San Clemente Fault Bank (see map) and were intrigued by what we found. Along the fault, we found a vast expanse of rock mounds made of some kind of precipitated mineral. The mounds formed in areas where chemicals seeping through the seafloor met with … Expedition Log 05.11.15 Gulf of California 2015, Leg 7 – Seafloor Faults – Log 3 Fault system off northern Baja California Eve Lundsten and Susan von Thun write: Today we explored another section of the fault system off northern Baja California that had been previously mapped with MBARI’s AUV. The AUV mapping surveys were conducted in areas where Chief Scientist Charlie Paull suspected that faults are present. With these one-meter-resolution … Expedition Log 05.10.15 Gulf of California 2015, Leg 7 – Seafloor Faults – Log 2 Understanding offshore faults Aaron Micallef writes: Offshore faults are important sources of earthquakes and associated tsunamis. To investigate the occurrence of offshore faults, marine geologists look for two kinds of evidence. The first is topographic, such as a linear escarpment (an elongated change in slope gradient) or abrupt changes in the form and orientation of … Expedition Log 05.07.15 Gulf of California 2015, Leg 7 – Seafloor Faults – Log 1 Sampling sediment at Coronado Canyon On this expedition we are exploring the offshore extensions of tectonic faults that cross the northern Baja California peninsula or run offshore parallel to the Baja peninsula and coastline of Southern California. These faults are believed to be part of a system of faults that extends northward, crossing the U.S.-Mexico …
Expedition Log 05.11.15 Gulf of California 2015, Leg 7 – Seafloor Faults – Log 3 Fault system off northern Baja California Eve Lundsten and Susan von Thun write: Today we explored another section of the fault system off northern Baja California that had been previously mapped with MBARI’s AUV. The AUV mapping surveys were conducted in areas where Chief Scientist Charlie Paull suspected that faults are present. With these one-meter-resolution … Expedition Log 05.10.15 Gulf of California 2015, Leg 7 – Seafloor Faults – Log 2 Understanding offshore faults Aaron Micallef writes: Offshore faults are important sources of earthquakes and associated tsunamis. To investigate the occurrence of offshore faults, marine geologists look for two kinds of evidence. The first is topographic, such as a linear escarpment (an elongated change in slope gradient) or abrupt changes in the form and orientation of … Expedition Log 05.07.15 Gulf of California 2015, Leg 7 – Seafloor Faults – Log 1 Sampling sediment at Coronado Canyon On this expedition we are exploring the offshore extensions of tectonic faults that cross the northern Baja California peninsula or run offshore parallel to the Baja peninsula and coastline of Southern California. These faults are believed to be part of a system of faults that extends northward, crossing the U.S.-Mexico …
Expedition Log 05.10.15 Gulf of California 2015, Leg 7 – Seafloor Faults – Log 2 Understanding offshore faults Aaron Micallef writes: Offshore faults are important sources of earthquakes and associated tsunamis. To investigate the occurrence of offshore faults, marine geologists look for two kinds of evidence. The first is topographic, such as a linear escarpment (an elongated change in slope gradient) or abrupt changes in the form and orientation of … Expedition Log 05.07.15 Gulf of California 2015, Leg 7 – Seafloor Faults – Log 1 Sampling sediment at Coronado Canyon On this expedition we are exploring the offshore extensions of tectonic faults that cross the northern Baja California peninsula or run offshore parallel to the Baja peninsula and coastline of Southern California. These faults are believed to be part of a system of faults that extends northward, crossing the U.S.-Mexico …
Expedition Log 05.07.15 Gulf of California 2015, Leg 7 – Seafloor Faults – Log 1 Sampling sediment at Coronado Canyon On this expedition we are exploring the offshore extensions of tectonic faults that cross the northern Baja California peninsula or run offshore parallel to the Baja peninsula and coastline of Southern California. These faults are believed to be part of a system of faults that extends northward, crossing the U.S.-Mexico …