[Parameters: Topic='SOLID EARTH', Term='ROCKS/MINERALS', Variable_Level_1='IGNEOUS ROCKS']
Heard Island 1986-1987 Scientific Expedition ReportEntry ID: Heard_86-87_Report
Abstract: Heard Island Expedition, 16 November 1986 to 21 January 1987, report written by Rod Ledingham, Officer in Charge.
Taken from the report:
The 1986-87 expedition was the second in a series of three consecutive expeditions planned to conduct new scientific work and to check on changes since the early wintering years from 1948-1954 and more recent sporadic visits by various government and private ... expeditions. We were dropped off at Heard Island on the 14th November 1986 by the Nella Dan.
The main thrust of this expedition was originally to have been geological but this was later expanded to cover biology and archaeology. Transport was provided by three Hughes 500 helicopters, old faithfuls VH-BAD piloted by John Robertson and VH-BAG piloted by Doug Crossan, and a new arrive from NZ, VH-HED flown by Phillip Turner, to provide speedy access to all areas of rock, either coastal or at high altitude on the mountain. Of particular interest to the geologists were the lavas of the January 1985 Big Ben eruption spotted by observers including Dick Williams, on the French vessel Marion Dufresne.
Despite some initial doubts about the possibility of flying, or even holding, aircraft at Heard for any length of time, and numerous relatively minor problems with weather and wind blown volcanic sand, the operation went very well and a great deal of new ground was covered, including several flights to the summit of Big Ben and the discovery of a new active crater and the expedition lava flows on the south-western slopes at Cape Arkona.
Two geologists accompanied the expedition, Jane Barling and Graeme Wheller. Geological mapping of the whole island was carried out by Jane where access was not too difficult or dangerous. Jane had previously worked on the samples brought back from Long Ridge and the summit by the Heard Island Expedition (private) on Anaconda II in 1983. The original map produced by Ainsworth in 1947 will be greatly improved when the material has been studied in more detail. The second geologist Graeme studied the relationships of the more recent lavas and attempted to get samples from the summit vent. The failure to do so was somewhat ameliorated by the finding of the new lava which it appears had emanated from the summit vent pipe and samples of summit rock were therefore available from 700m above Cape Arkona.
Further information about the botanical and biological work is available in the report.
(Click for Interactive Map)
Start Date: 1986-11-16Stop Date: 1987-01-21
BIOSPHERE > VEGETATION > VEGETATION COVER
BIOSPHERE > VEGETATION > VEGETATION INDEX
BIOSPHERE > VEGETATION > VEGETATION SPECIES
CRYOSPHERE > GLACIERS/ICE SHEETS > GLACIERS
HUMAN DIMENSIONS > INFRASTRUCTURE > CULTURAL FEATURES
HUMAN DIMENSIONS > ENVIRONMENTAL GOVERNANCE/MANAGEMENT > LAND MANAGEMENT
TERRESTRIAL HYDROSPHERE > GLACIERS/ICE SHEETS > GLACIERS
OCEANS > OCEAN CIRCULATION > OCEAN CURRENTS
OCEANS > TIDES
SOLID EARTH > GEOMAGNETISM > PALEOMAGNETISM
SOLID EARTH > GEOMAGNETISM
SOLID EARTH > GEOMORPHIC LANDFORMS/PROCESSES
SOLID EARTH > ROCKS/MINERALS/CRYSTALS > IGNEOUS ROCKS
SOLID EARTH > ROCKS/MINERALS/CRYSTALS
SOLID EARTH > TECTONICS > EARTHQUAKES > EARTHQUAKE OCCURRENCES
SOLID EARTH > TECTONICS > EARTHQUAKES
SOLID EARTH > TECTONICS > VOLCANIC ACTIVITY
CRYOSPHERE > GLACIERS/ICE SHEETS
TERRESTRIAL HYDROSPHERE > GLACIERS/ICE SHEETS
BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > BIRDS
BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > BIRDS > PENGUINS
BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > MAMMALS > CARNIVORES > SEALS/SEA LIONS/WALRUSES
BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > MAMMALS
BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > MAMMALS > RODENTS
BIOLOGICAL CLASSIFICATION > PLANTS > ANGIOSPERMS (FLOWERING PLANTS)
BIOLOGICAL CLASSIFICATION > PLANTS > MOSSES/HORNWORTS/LIVERWORTS
BIOLOGICAL CLASSIFICATION > PLANTS > MACROALGAE (SEAWEEDS) > BROWN ALGAE
BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > BIRDS > ALBATROSSES/PETRELS AND ALLIES
Quality ATTRIBUTE ACCURACY REPORT: The data has been in use by the agency and other agencies since its inception. The database has undergone rigorous quality checks.
HORIZONTAL POSITIONAL ACCURACY REPORT: Used Differential GPS. Data is truncated to 2nd decimal point (about 1500 meters) with respect to location due to confidentiality.
Access Constraints To view constraints placed on dataset, please see Policy and Disclaimer section (from the panel on the left) on OBIS-USA web site at http://www.usgs.gov/obis-usa.
DISTRIBUTION LIABILITY: OBIS-USA renders information prepared by contributors accessible through dynamic on-line publication. It does not peer-review the quality of the data provided. However, it is confident that the data ... are the best available in electronic form. OBIS-USA does not own or try to control or limit the use of any data or products accessible through its website. Accordingly, it does not take responsibility for the quality of such data or products, or the use that people may make of them.
Users must recognize that the analysis and interpretation of data requires background knowledge and expertise about marine biodiversity (including ecosystems and taxonomy). Users should be aware of possible errors in the use of species names, geo-referencing, data handing and mapping. They should crosscheck their results for possible errors, and qualify their interpretation of any results accordingly. Appropriate caution is thus necessary in the interpretation of results derived from OBIS-USA.
Use Constraints Prior to use of these records in any analysis or report, MARMAP must be notified and if used the provenance of the original data must be acknowledged. Acknowledge the use of specific records from contributing MARMAP databases and acknowledge the use of the OBIS-USA facility. Recognize the limitations of data in OBIS-USA.
Data Set Progress
Distribution Format: Text
Role: TECHNICAL CONTACT
Email: reichertm at dnr.sc.gov
Marine Resources Research Institute PO Box 12559
Province or State: SC
Postal Code: 29422-2559
Country: United States of America
Role: DIF AUTHOR
Email: Philip.Goldstein at Colorado.edu
Creation and Review Dates
DIF Creation Date: 2011-01-14
Last DIF Revision Date: 2012-02-01