Geophysics

2201 Submissions

[5] viXra:2201.0119 [pdf] submitted on 2022-01-19 16:21:13

Impact-Area of Ejecta-Rays from the Port Hedland Crater or from the VLC, Located Near Kalgoorlie (Western Australia)_raman Spectra of Selected Rock Samples

Authors: Harry K. Hahn
Comments: 29 pages, 75 images, 34 diagrams

The Gravity Anomaly Map indicates that Ejecta-material from the Ø400x350km Port Hedland Crater or from the Victoria-Lake Crater (VLC) in East-Africa probably impacted in the Kalgoorlie-area and formed the noticable linear structures. The Port Hedland Crater and the Victoria Lake Crater (VLC), which are both unknown craters yet, in all probability are large secondary-craters that were caused by the Permian-Triassic Impact Event (PTI). The geological map shows large-scale structures (linear- & bow-shaped structures) in the Kalgoorlie-area which have strong similarities to structures caused by ejecta-blankets (-lobes) originating from an Impact-Crater. These structures consist of rock-types different to the rock-types of the surrounding plains of the Yilgarn Craton. Compare these structures to the ejecta-rays (-lobes) from the Graterri-Crater on Mars ! These ejecta-ray-structures penetrate the Yilgarn-Craton approximately down to a depth of 10 km ! In the Kalgoorlie area the Super-Pit gold-mine is located. The Gold and other rare- & heavy-elements found in the area surely were ingredients of the PT-Impactor (an asteroid or comet), the origin of the ejecta that impacted here. I have collected some rock-samples from these ejecta-ray- (lobe-) structures in the Kalgoorlie area and have analysed these samples, mostly quartz, with Micro-Raman-Spectroscopy, to find out if they were exposed to a shock-pressure which may indicate an Impact Event. And indeed that precisely is the case ! The Raman-spectra of quartz from the Sample Sites 2, 4, 5, 13, 21, 27 & 31 provide first evidence for an Impact Event as the probable cause of these Ejecat-ray- (lobe-) structures in the Kalgoorlie Area. So far the samples from the Klagoorlie-area provided the best evidence for an Ejecta-Impact area !! The following shifts of the main Raman-peaks, of the analysed quartz grains, to lower frequencies (which all indicate an impact shock event) were measured : 462, 261, 204 & 125 cm-1 (Site 2_stone_1); 463, 260 & 205 (Site 2_stone 2); 463,260,204 (Site-4); 463,260/266 (Site 5); 463,261,125 (Site-21); 463,261,205,125 (Site-27); 463,257/267,204,125 (Site-31); 260,126 (Site-5_stone_2) & 204, 126 cm-1 (Site-13). Microscopic images of a number of analysed quartz grains will provide further proof for a shock event ! PDFs (planar deformation features) seem to be present in some samples ! (see images on pages 4 to 17). All spectra were made with a BRUKER Senterra-II Raman-Microscope. Images of the analysed rock samples and photos of the sample sites are in the Appendix at page 18.
Category: Geophysics

[4] viXra:2201.0118 [pdf] submitted on 2022-01-19 16:30:09

Impact-Area of an Ejecta-Ray from the Port Hedland Crater or from the VLC , Located Near Geraldton (Western Australia)_raman Spectra of Selected Rock Samples

Authors: Harry K. Hahn
Comments: 22 pages, 50 images, 26 diagrams

The visited area is located near the town Geraldton (Western Australia). The Gravity Anomaly Map indicates that Ejecta-material either from the assumed Ø400x350km Port Hedland Crater or from the Victoria-Lake Crater (E-Africa) in all probability impacted here and formed these linear structures. The Port Hedland Crater is located north of the town Port Hedland on the sea-floor of the Indian Ocean. The Port Hedland Crater and the Victoria-Lake Crater (VLC), which are both unknown craters yet, in all probability are large secondary craters that were caused by the Permian-Triassic Impact Event (PTI). The geological map shows large-scale structures that have strong similarities to structures caused by ejecta-blankets which were produced by an impact. These structures consist of rock types that are different to the rock types of the surrounding plains of the Yilgarn-Craton. The nearly linear ejecta-ray structures seem to have penetrated the Yilgarn-Craton approximately up to a depth of around 10km (see geologic cross-section B-C). I have collected some rock-samples from these nearly linear structures in the Geraldton-area and have analysed these samples, mostly quartz, with Micro-Raman-Spectroscopy, to find out if they were exposed to a shock-pressure which may indicate an Impact Event. And indeed that is the case ! The Raman-spectra of quartz from the Sample Sites 11, 12 and 17 provide first evidence for an impact event as the probable cause of the linear ray-structure in the visited area. Indication for an impact shock event comes also from the sites 23 and 24. The clear shifts of the main Raman peaks, of the analysed quartz samples, to the lower frequencies 461 and 126 cm-1 (Site 11, stone 2), to 463, 262/268 and 125 cm-1 (Site 17, stone 1), to 463 and 125 cm-1 (Site 11, stone 1), to 260/265, 125 cm-1 (Site 17, stone 2) and to 261 and 126 cm-1 (Site 12) provide first proof for an Impact Event as the cause of the ray-structure visible on a gravity-anomaly- and on a geological map ! Microscopic images of some analysed quartz grains seem to provide further proof for a shock event. PDFs (planar deformation features) seem to be present in some samples (see images on pages 3 to 14). All spectra were made with a BRUKER Senterra-II Raman-Microscope. Images of the analysed rock samples and photos of the sample sites are in the Appendix at page 21.
Category: Geophysics

[3] viXra:2201.0061 [pdf] submitted on 2022-01-11 17:32:04

Impact-Area of the Ejecta-Ray R4 from the PT-Impact Crater, Located Near Margaret River (Western Australia)_raman Spectra of Selected Rock Samples

Authors: Harry K. Hahn
Comments: 22 pages, 60 images, 28 diagrams

The visited area is located along the west-coast of SW-Australia near the town Margaret River. The Gravity Anomaly Map indicates that along this section of the coast the massive Ejecta-Ray R4 (caused by the Permian-Triassic-Crater) impacted in a very short distance and formed this coast-line. According to my Permian-Triassic Impact (PTI) Hypothesis this powerful Ejecta-Ray R4, which probably was caused by the leading-edge of the right ejecta-wing of the PTI, cut through Earth’s crust and in that way it separated (cut-off) the Australian Plate and the Indian Plate, from the African Plate. In the classic plate tectonics theory this would mean: Ejecta-Ray R4 was a (the) major cause of the break-up of Pangea ! After the PTI-Impact Event, the Australian Plate and the Indian Plate slowly drifted away from the African Plate in eastern- & north-eastern direction, as the ocean-floor-age map indicates. For a detailed description of the Permian-Triassic Impact (PTI) Hypothesis please read Part 1 of my PTI-hypothesis. I have collected some rock-samples along the coast-line in the Margaret River area, which is located close to the original course of Eject-Ray R4. Therefore shock-metamorpic effects caused by Ejecta-Ray R4 should be present in rocks from this coastal-area, which are older than 250 myr. And indeed they are ! The Raman spectra of quartz from the sample-sites 2, 4, 5 and 7-B collected along the coast in the Margaret River area provide first evidence for an impact (shock) event caused by Ejecta-Ray R4. The shifts of the main Raman peaks, of analysed quartz from sample-site 5, to the lower frequencies 463, 258/264, 126 cm-1 is a clear indication for an impact shock-event. Further indication comes from analysed quartz-grains from the sample-sites 2, 4 and 7-B which show shifts of main Raman-peaks to the lower frequencies 204, 125 cm-1 ; 261, 125 cm-1 and 260/267, 126 cm-1 and 263, 126 cm-1. Further indication comes from Microscopic images of quartz from sample site 7-B (from Cape Leeuwin) which seems to indicate PDFs (planar deformation features), see microscopic-Images on page 7 & 10. Microscopic images of analysed quartz grains from the sites 2, 4 and 5 may provide further proof (pages 3 to 11). All spectra were made with a BRUKER Senterra-II Raman-Microscope. Images of the analysed rock-samples and photos of the sample-sites: see Appendix 1, page 16. References: see page 22
Category: Geophysics

[2] viXra:2201.0060 [pdf] submitted on 2022-01-11 17:40:53

Impact-Area of an Ejecta-Ray from the Port Hedland Crater, Located Near Southern-Cross (Western Australia)_raman Spectra of Selected Rock Samples

Authors: Harry K. Hahn
Comments: 26 pages, 64 images, 32 diagrams

The visited area is located near the small town Southern-Cross in Western-Australia. The Gravity Anomaly Map indicates that Ejecta-material from the assumed Ø400x350km Port-Hedland Crater (Impact) in all probability impacted here and formed these linear structures (ejecta-rays). The Port Hedland Crater is located north of the town Port Hedland on the sea-floor of the Indian Ocean. The Port Hedland Crater, which is unknown yet, in all probability is a large secondary crater caused by the Permian-Triassic Impact Event. Another possible source of the linear ejecta rays could be the Victoria Lake Impact (see map on next page). For a detailed description of the Permian-Triassic Impact (PTI) Hypothesis please read Part 1 of my hypothesis. The geological map identifies the nearly linear structures as structures (low mountain ranges) which consist of different rock types than the surrounding plains of the Yilgarn Craton. These linear structures seem to penetrate the Yilgarn Craton down to a depth of around 6 km (see geologic cross-section A-B). I have collected some rock-samples from these nearly linear structures in the Southern-Cross area and have analysed these samples, mostly quartz, with Micro-Raman-Spectroscopy, to find out if they were exposed to a shock pressure which may indicate an Impact Event. And indeed that exactly seems to be the case ! The Raman-spectra of quartz from the Sample Sites 1, 9, 16 & 18 provide first evidence for an impact event as the probable cause of the linear ray-structure in the Southern-Cross area. The clear shifts of the main Raman peaks, of the analysed quartz samples, to the lower frequencies 463, 261, 204 and 126 cm-1 (Site 1), to 463, 261 and 205 cm-1 (Site 9 & 16) and to 463, 261, 204 and 125 cm-1 (Site 18) provide first proof for an Impact Event as the cause of the linear ray-structure ! Microscopic images of some analysed quartz grains seem to provide further proof for a shock event. PDFs (planar deformation features) seem to be present in some samples (images on pages 4 to 11). All spectra were made with a BRUKER Senterra-II Raman Microscope (wavenumber precision <0.1cm-1). Images of the analysed rock samples and photos of the sample sites are in the Appendix at page 18. References: see page 26, and pages 14-16, 20-21 & 24-27 of Part1 of my hypothesis.
Category: Geophysics

[1] viXra:2201.0018 [pdf] submitted on 2022-01-05 18:14:37

The 50km 3-Gyr Archean Impact Crater in NW-Australia (Pilbara Craton)_raman-Spectra of Selected Rock Samples

Authors: Harry K. Hahn
Comments: 25 pages, 62 images . 31diagrams

The 50km Archean Impact Crater with an age of >3 Gyr is located 150km SE of Port-Hedland on the Pilbara Craton near Marble Bar/Western-Australia. The impact-structure is noticeable on a magnetic-anomaly map and on a contrast-enhanced satellite map. It is a yet unknown impact structure ! This impact crater is very interesting, especially for Astrobiologists, because some of the earliest life-forms on Earth developed inside the crater-area after the impact ! The Dresser- and Strelley-Pool- Formations inside the crater contain some of the oldest fosselized Stromatolites on Earth ! I have analysed some rock-samples which I have collected along a mainroad which passes the crater just outside its northern crater-rim-area (samples No: 14 to 21). Note that the original crater-wall was later deformed by an (expansion) tectonic process that obviously was caused by the impact. And the impact in all probability was an oblique impact, which means the impactor impacted in a relatively shallow angle of ≤30°. Because of the oblique impact and the tectonic-process, fragments of the original crater-wall ended up further north close to the road were I collected the samples. Therefore the collected samples probably originate from the elevated crater-rim area. The Raman spectra of quartz from the sample-sites 14, 16, 18 and 21-A collected along the main-road provide first evidence for an impact (shock) event as the probable cause of the described structure. The shifts of the main Raman peaks, of analysed quartz grains from these sites, to the lower frequencies 463, 259/266, 125 cm-1 and 463, 262, 125 and 463, 263, 204 and 463, 263, 126 are a clear first indication for an impact shock event that has caused a shock pressure of around 22 GPa ! Further indication comes from the Raman-spectrum of quartz from sample-site 23 collected near the small town Marble Bar, that originates from the western crater-rim-area of the impact crater, which also shows clear shifts of the main Raman peaks to the lower frequencies : 463, 262, 204 and 125 cm-1 Microscopic images of some of the analysed quartz grains may provide further proof for a shock-event. (see Images on pages: 6,7,9,10,11 and 13). Images of the analysed rock-samples and photos of the sample-sites are in the Appendix at page 18. References: see page 25
Category: Geophysics