Earthquakes, Rock Avalanches, Displacement Waves, and Turbidites: The Amazing Holocene Sedimentary Record from Lake Crescent, Clallam County, Washington
On Friday, July 8, 2022, the QGS Rockstars (four of our geologists) will lead a 4-mile, 4-hour hike (11AM—3PM) from HJ Carroll County Park near Chimacum to the Tamanowas Rock Sanctuary, then up on top of Tamanowas Ridge to see Peregrine’s Rock.
The hike can be vigorous, steep, and rough in parts and is tailored to agile citizen scientists who are already knowledgeable about geologic principles and vocabulary. Subjects to be discussed include the glacial history of the Quimper Peninsula, specifically Chimacum Valley, glacial erratics on the Peninsula, and the geology of the underlying Eocene volcanic rocks. Tamanowas Rock is a special part of this story and a sacred place of the S’Kallum people. Tamanowas Rock is the remnant of an explosive volcano that erupted about 43 million years ago. It is comprised of Adakite, an unusual type of lava that forms under anomalously high temperatures when a subducted oceanic plate starts to melt.
Conversely, Peregrine is a glacial erratic named by Erik Nagel, a participant in our Great Erratic Challenge two years ago. It currently is the largest erratic documented on the Quimper Peninsula. The Rockstars are currently preparing a concise, illustrated guidebook (pdf), which will be emailed to all attendees in early July. The field trip is limited to 50 hikers and requires advance registration (by snail mail) and a $15 fee (by check). Deadline for RECEIPT of your form and check is Friday, July 1. Those who register but exceed our limit may request to be placed on a wait list. The trip will run no matter the weather conditions, since the Rockstars will have travelled long and far to lead this trip. Click on the the registration button below to download the required form.
Nearly 60% of the surface of our planet is covered by more than 2000 m of water. The deep seabed is the largest and least explored ecological region on Earth. With no light for photosynthesis, this cold high-pressure environment is a food desert, with most organisms feeding on organic debris that sinks from the surface ocean. Yet, there are an estimated 500,000 or more species in the deep sea, many of which occur nowhere else. The abyss has seen relatively little disturbance from human activities, but that situation is poised to change. Economic growth is driving increasing demand for base metals and rare-earth elements. Known mineral resources on land will soon be insufficient. Seabed mining is now technologically feasible and regulatory agencies such as the International Seabed Authority are currently finalizing regulations for mineral extraction. Environmental disturbance from seabed mining operations will be significant, with some mining operations at the scale of 10,000 square kms or more. My presentation will shine some light on the current debate between deep-sea mining interests and the interests of biodiversity conservation and genetic resource biodiscovery. And I will also touch on some of the technologies that are being used for deep-sea exploration.
Manganese nodules, cobalt-rich manganese crusts, and polymetallic sulphides comprise the major mineral deposits that are currently being considered for mining. The romantic view of deep-sea mining that emerged in the mid-20th century must now contend with the realization that each of these deposits host unique faunal and microbial communities that would be severely impacted by mining operations. Together, we will explore each of these environments and their inhabitants through imagery collected by research submersibles, and learn more about their biodiversity, their contribution to ocean ecosystem function, and their potential for biotechnological and pharmaceutical applications. We will also introduce some of the players in this “battle for the abyss,” from regulatory agencies to mining companies, deep-sea biologists and Big Pharma.
Kim Juniper is Chief Scientist with Ocean Networks Canada (ONC), a University of Victoria-basedorganization that operates cabled ocean observatories in the Pacific, Arctic and Atlantic Oceans. He is also Professor in UVic’s School of Earth and Ocean Sciences and Department of Biology, and holder of the British Columbia Leadership Chair in Ocean Ecosystems and Global Change. He has authored more than 130 peer-reviewed publications on the microbiology, biogeochemistry and ecology of deep-sea hydrothermal vents, and low oxygen and other marine habitats. He has contributed scientific leadership and advisory roles to many national and international initiatives including, most recently, the Canadian Healthy Oceans research network (CHONe), the Partnership for Observation of the Global Ocean (POGO), OceanObs’19 and OceanObs Next, the North Pacific Marine Science Organization (PICES), and the European Marine water Column and Seafloor Observatory (EMSO-ERIC). He served as an occasional advisor to the International Seabed Authority during the development of regulations for the exploration and extraction of seabed mineral resources in areas beyond national jurisdictions. His current research is focusing on bio-prospecting methods for the assessment of the microbial genetic resources associated with seafloor massive sulphide deposits.
This lecture was recorded on Sat. April 2, 2022.