1,102 research outputs found
XRF counts of Ti, S and Ca in sediment core Co1008 from Skua Lake, Rauer Group, East Antarctica
No full textXRF counts of Ti, S and Ca in sediment core Co1008 from Skua Lake, Rauer Group, East Antarctic
Rauer Group Satellite Image Map 1:50000
No full textProgress Code: completedStatement: Please see URL link ('Procedures employed to produce the image maps of Vestfold Hills and Rauer Group Islands - Antarctica').
Data source: Two multispectral space imagery SPOT1 images (K281 J494, K281 J493), acquired 21 January 1989 and 16 February 1990 respectively.
Projection and Grid: Transverse Mercator, grid zone 43.
Co-ordinates: Geographical and UTM.
Horizontal datum: World Geodetic System 1984.
Magnetic Variation: 76.6 degrees west in 1991.
Nomenclature: Names approved by the Antarctic Names Committee of Australia but are subject to confirmation (June 1991).Satellite image map of the Rauer Group, Antarctica. This map was produced for the Australian Antarctic Division by AUSLIG (now Geoscience Australia) Commercial, in Australia, in 1991. The map is at a scale of 1:50000, and was produced from two SPOT 1 scenes. It is projected on a Transverse Mercator projection, and shows refuge/depots and gives some historical text information. The map has both geographical and UTM co-ordinates
Rauer Group Geomorphology
No full textProgress Code: completedThis dataset consists of spreadsheets with data about the geomorphology of the Rauer Group compiled by Dr Phil O'Brien. The spreadsheets refer to photos provided by Dr Duanne White, University of Canberra and collected during the expedition of the RV Polarstern (ANT-XXIII/9) in 2007. The photos are of landscapes and landforms and include metadata to allow their use as benchmark images for monitoring change and processes. Some images of human impacts are included to allow for estimates of the longevity of these features. The photos are available from the metadata record with ID Rauer_Group_Geomorphic_Map (see a provided URL)
Rauer Group GIS data update from various sources
No full textProgress Code: completedStatement: Data quality information for each feature is located in the attribute table.The Australian Antarctic Data Centre's topographic GIS data for the Rauer Group, Antarctica was originally the data described by the metadata record 'Rauer Group 1:50000 Topographic GIS Dataset' with Entry ID: Raur50k.<br/><br/>Since then a number of features have been added to this data. The data are available for download as part of the Rauer Group GIS data group from a Related URL.<br/><br/>The data are formatted according to the SCAR Feature Catalogue (see Related URL). Data that are part of this dataset have Dataset_id = 47 in the SCAR Feature Catalogue format
The Rauer-Rengali connection in the Indo-Antarctica amalgam: Evidence from structure, metamorphism and geochronology
No full text© 2017 The Author(s). India and East Antarctica collided during assembly of the Rodinia supercontinent at around 1 Ga. Granulites related to this orogeny are exposed in the Eastern Ghats Province (EGP) in India, and these are believed to have been contiguous with granulites of the Rayner Province in East Antarctica at that time. In the Indian segment, we describe a shear zone between the EGP and the Rengali Province to its north along which strongly foliated bands of garnetiferous quartzofeldspathic gneisses, khondalites and charnockites are intercalated. The foliation is consistently east-west trending and subvertical, with downdip intersection lineations. Maximum asymmetry in horizontal sections and textural analysis using electron backscattered diffraction (EBSD) analysis confirm that the transport vector during shearing was horizontal. The shear zone is interpreted as a dextral strike-slip fault that operated under greenschist-facies conditions, juxtaposing 1 Ga EGP granulites with 2.8 Ga cratonic granulites to the north. The corresponding region in East Antarctica is represented by the Rauer Group, where intercalations between 2.8 and 1.0 Ga, vertically orientated lithologies, are observed alongside 0.5 Ga shear zones. These features in the Rauer Group can be correlated with those in the Rengali Province, further supporting existing palaeogeographical reconstructions of Gondwana
Thermotectonic evolution of the Rauer Group and Vestfold Hills in Prydz Bay: implications for Neoproterozoic assembly of the East Antarctic Shield
No full textThe Rauer Group and Vestfold Hills are critical components of the East Antarctic Shield and are believed to have been parts of the supercontinents Rodinia and Gondwana. The Rauer Group is characterized by Archean to Pan-African thermal history, while the Pan-African signature in the Vestfold Hills is restricted to its southwestern margin. The correlation between the Rauer Group and Vestfold Hills remains controversial, while the significance of amalgamation between these two terranes remains unclear. Most importantly, the precise nature and timing of the Rauer-Vestfold contact is disputed. In this review, we compare the available structural, metamorphic, geochronological and geophysical data in these two East Antarctic terranes and suggest that (i) the Rauer Group and Vestfold Hills of East Antarctica were amalgamated during the late Mesoproterozoic to early Neoproterozoic (∼1000 Ma), and (ii) the Rauer-Vestfold contact is located beneath the Sørsdal Glacier in the East Antarctic Shield. Finally, we argue that juxtaposition of the Rauer-Vestfold contiguous crustal unit with the Eastern Ghats Province (EGP)-Rayner amalgam took place in the Pan-African time (∼500 Ma).Sandro Chatterjee, Aishi Debnath, Suvankar Samantaray, Devsamridhi Arora, Soham Dey, Saibal Gupta, Naresh Chandra Pan
Magnetotelluric investigation of the Vestfold Hills and Rauer Group, East Antarctica (time series)
No full textNAThis record was harvested by RDA at 2025-09-11T16:10:37.805841+10:00 from <a href='http://geonetwork.nci.org.au/geonetwork/srv/eng/catalog.search#/metadata/f2638_6708_6611_7301'>NCI's Data Catalogue</a> where it was last modified at 2019-06-04T12:06:15.The Vestfold Hills and Rauer Group in East Antarctica have contrasting Archean to Neoproterozoic geological histories and are believed to be juxtaposed along a suture zone that now lies beneath the Sørsdal Glacier. Exact location and age of this suture zone are unknown, as is its relationship to regional deformation associated with the amalgamation of East Gondwana. To image the suture zone, magnetotelluric (MT) data were collected in Prydz Bay, East Antarctica, mainly along a profile crossing the Sørsdal Glacier and regions inland of the Vestfold Hills and Rauer Group islands. 

MT data were collected by a team from University of Adelaide with support from the Australian Antarctic Division (AAD) in the austral summer of 2008/2009. Thirty four stations were collected along three transects totaling approximately 200 line kilometers, with station spacing varying between 2.5 and 20 km . Instrumentation consisted of six AuScope MT systems using Numeric Resources preamplifiers to overcome the high contact impedance of ice. Magnetic data were variably collected using three-component fluxgate, and two-component (both horizontal) and three-component (two horizontal and one vertical) induction coil magnetometers. Stainless steel plates were used for electrodes (with the face placed horizon- tally in snow or ice) along 100 m dipoles setup in an L-shape. Data were collected for an average of 5 days at a sampling rate of 100 samples/s. All stations where aligned with geomagnetic north (81 degrees west of geographic north). The field team was stationed at the AAD’s Davis Station and transported between stations via helicopter
Rauer Group 1:50000 Topographic GIS Dataset
No full textProgress Code: completedStatement: Owing to the surface conditions at the time of the photography small islands and lakes may not be present and the shapes of features may be incorrect. The topographic data covering the island group and coastal region has been sourced from ANARE aerial photography dated 1960 (films ANT97 and ANT75). Contours on ice where sourced from 1:100,000 and 1:200,000 scale Soviet mapping. SPOT XS satellite imagery (K281-J493 of 16/2/90) was used to define the seaward extent of glacier tongues.
Owing to deficiencies in the aerial photography (no camera calibration or fiducial marks and insufficient overlays) and lack of ground control these data do not meet 1:50,000 mapping standards. Distortions of up to 50 metres are known to exist in the data.
Note: The link to shapefile below links to all Rauer Group GIS data. This record refers specially to data with a dataset_id = 75.Rauer Group 1:50000 Topographic GIS dataset. Data conforms to SCAR Feature Catalogue which can be searched.<br/>10 metre contour interval on rock, 20 metre contour interval on ice up to 100 metres, 100 metre contour interval on ice above 100 metres
Locating the Indo-Antarctica suture – Correlating the Rengali, Rauer and Ruker terranes in Gondwana
No full textThe Rayner Complex of East Antarctica and the Eastern Ghats Province (EGP) of India are thought to have been contiguous in past supercontinents like Rodinia and Gondwana. These terranes have been correlated on the basis of similar granulite facies metamorphic imprints and isotopic age data that testify to Grenvillian (1100-900 Ma) and Pan-African (650-450 Ma) thermal signatures. The Grenvillian granulite facies metamorphic event is generally thought to represent collision between Antarctica and cratonic India, but the precise location of the Indo-Antarctic suture is disputed. The intensity of Pan-African age geological imprints is also variable in both continents, and their significance remains unclear. In this review, we correlate structural, metamorphic and geochronological data in both terranes and parts of their bounding cratons, and suggest that the Ruker Terrane and Rauer Group in Antarctica were continuous with the Rengali Province in India. Together with the established correlation between the EGP and the Rayner Complex, this implies that cratonic India along with the EGP-Rayner amalgam collided with the Archaean Ruker Terrane (part of the Crohn craton) at ~520 Ma along the southern Prince Charles Mountain in East Antarctica. This suture is distinct from the Grenvillian suture between EGP-Rayner and cratonic India
Un moderno falso origeniano: sull’attribuzione e sui testimoni di Or. fr. 241-242 Rauer (90-91 Crouzel-Fournier-Périchon) in Lc.
No full textFollowing a critical remark by E. Prinzivalli, the article aims to show that two Greek fragments usually attributed to Origen (Or. fr. 241-242 Rauer (90-91 Crouzel-Fournier-Périchon) in Lc.) are actually spurious. The author demonstrates that M. Rauer linked the first fragment to Origen because he misread the lemma in the manuscript Par. Coisl. 612. Moreover, he identifies two “new” testimonies of the fragments (Vat. Pal. gr. 20, Vind. theol. gr. 117), in which they are both ascribed to Apollinaris of Laodicea. Indeed, several proofs indicate that Or. fr. 241-242 Rauer in Lc. should be attributed to Apollinaris, and should be published as one fragment, together with another small excerpt by Apollinaris (Apoll. fr. 11,5-6 Reuss in Lc.)
- …
