Neotectonic Features

[View Map in ArcGIS] Abstract This dataset shows tectonic and surface features across Australia that are linked, or may be linked, to significant seismic activity over the past 5 to 10 million years. It includes four main parts: * Neotectonic features – these fault lines that may show where large earthquakes happened in the past. * Reliability layer – each feature has a rating from A to D that shows our level of confidence. * Neotectonic images – JPEG images are linked to feature IDs, when they are available. * Neotectonic domains – these areas group features that behave in similar ways, such as their shape, how fast they move, and the type of crust they sit on. Together, these layers help assess earthquake risk. They also show how Australia’s crust has changed over time due to tectonic forces. For further detail, see: [Long-term behaviour of Australian stable continental region faults]. Currency Date created: 01 January 2012 Modification frequency: As needed Data extent Spatial extent North: -9° South: -44° East: 168° West: 96° Source information [View the Neotectonic features database] [View the Neotectonic domains] Lineage statement This dataset shows landscape features in Australia caused by tectonic activity over the last 5-10 million years. These are called neotectonic features. The data was collected by using maps from satellite images, aerial photos, and digital elevation models (DEMs). DEMs show the shape of the land. The team also used geological maps, research papers, and advice from experts. These experts include state geologists and earth scientists. The list of neotectonic features is not complete. Its accuracy depends on the data available. This includes DEMs, mining records, and survey reports. The list is also affected by how much loose soil covers the land, as neotectonic features can be hidden. It also depends on how quickly the land changes (e.g. through erosion) compared to tectonic movements. Many areas in inland and northern Australia have not been studied in detail. Most information comes from DEMs with a 30-metre resolution. The team mapped these features using Geographic Information Systems (GIS). They stored the results in a cloud database with extra information called metadata. Scientists are still checking if these features are tectonic faults. So far, fewer than 20 out of more than 400 features have been closely studied. These studies help find out when earthquakes happened, how often they occur, and how strong they were. Note: The Neotectonic features line layer pop-up reads all geological information related to earthquakes from Reliability point layer. Publications Clark, D., A. McPherson, and C. D. N. Collins (2011). Australia’s seismogenic neotectonic record: a case for heterogeneous intraplate deformation, Geoscience Australia Record 2011/11, 95 p. [https://pid.geoscience.gov.au/dataset/ga/70288] Clark, D., A. McPherson, and R. Van Dissen (2012). Long-term behaviour of Australian Stable Continental Region (SCR) faults, Tectonophysics 566-567, 1-30, [http://dx.doi.org/10.1016/j.tecto.2012.07.004]. Data dictionary Neotectonic features attribute ──────────────┬───────────────────────────────────────────────────────────── Attribute name│Description ──────────────┼───────────────────────────────────────────────────────────── feature_id │Unique feature identifier for each Neotectonic Feature record ──────────────┼───────────────────────────────────────────────────────────── sdo_gid │This is an attribute which indicates the type of the geometry ──────────────┴───────────────────────────────────────────────────────────── Reliability layer attribute ────────────────────────────┬─────────────────────────────────────────────────────────────────────────────────────────────────────── Attribute name │Description ────────────────────────────┼─────────────────────────────────────────────────────────────────────────────────────────────────────── feature_id │Unique feature identifier for each Neotectonic Feature record ────────────────────────────┼─────────────────────────────────────────────────────────────────────────────────────────────────────── feature_name │Feature name ────────────────────────────┼─────────────────────────────────────────────────────────────────────────────────────────────────────── feature_type │Type of feature (e.g. fault scarp, fold etc) ────────────────────────────┼─────────────────────────────────────────────────────────────────────────────────────────────────────── longitude │Longitude coordinate of location in decimal degrees. ────────────────────────────┼─────────────────────────────────────────────────────────────────────────────────────────────────────── latitude │Latitude coordinate of location in decimal degrees. ────────────────────────────┼─────────────────────────────────────────────────────────────────────────────────────────────────────── location_precision │Estimate of the location precision of the point or line geometry ────────────────────────────┼─────────────────────────────────────────────────────────────────────────────────────────────────────── location_remarks │Details of the dataset used to define the feature (e.g. 30 m resolution DEM) ────────────────────────────┼─────────────────────────────────────────────────────────────────────────────────────────────────────── location_method │Dataset category used to discover/define the feature (e.g. geological map). ────────────────────────────┼─────────────────────────────────────────────────────────────────────────────────────────────────────── state │Standardized state abbreviation, e.g NSW is New South Wales ────────────────────────────┼─────────────────────────────────────────────────────────────────────────────────────────────────────── confidence_level │Confidence ranking system has been implemented ranging from A (best confidence) to D (least confidence) ────────────────────────────┼─────────────────────────────────────────────────────────────────────────────────────────────────────── synopsis │Summary of feature characteristics ────────────────────────────┼─────────────────────────────────────────────────────────────────────────────────────────────────────── neotectonic_domain │Which Neotectonic domain the feature is within [http://dx.doi.org/10.1016/j.tecto.2012.07.004] ────────────────────────────┼─────────────────────────────────────────────────────────────────────────────────────────────────────── geologic_setting │General geological context of the feature (e.g. Yilgarn Craton) ────────────────────────────┼─────────────────────────────────────────────────────────────────────────────────────────────────────── geomorphic_expression │How the feature appears in the landscape (e.g. youthful, eroded etc). ────────────────────────────┼─────────────────────────────────────────────────────────────────────────────────────────────────────── length │Length of a linear feature in km ────────────────────────────┼─────────────────────────────────────────────────────────────────────────────────────────────────────── displacement │Total neotectonic displacement estimate in metres ────────────────────────────┼─────────────────────────────────────────────────────────────────────────────────────────────────────── average_strike │Average trend of a linear feature ────────────────────────────┼─────────────────────────────────────────────────────────────────────────────────────────────────────── dip_direction │Direction of dip of a planar feature ────────────────────────────┼─────────────────────────────────────────────────────────────────────────────────────────────────────── sense_of_movement │E.g. normal, reverse, reverse obliqui, strike-slip ────────────────────────────┼─────────────────────────────────────────────────────────────────────────────────────────────────────── age_name │Geological timescale name of youngest deformed deposit ────────────────────────────┼─────────────────────────────────────────────────────────────────────────────────────────────────────── deformed_deposit_description│Description of youngest deformed deposit ────────────────────────────┼─────────────────────────────────────────────────────────────────────────────────────────────────────── seismicity_remarks │Are any historical or instrumental earthquakes related to the feature ────────────────────────────┼─────────────────────────────────────────────────────────────────────────────────────────────────────── slip_rate_remarks │Comment on activity rate (uplift rate or slip rate) for a fault underlying a landscape feature ────────────────────────────┼─────────────────────────────────────────────────────────────────────────────────────────────────────── bibliographic_references │Publications cited in the neotectonic feature record ────────────────────────────┼─────────────────────────────────────────────────────────────────────────────────────────────────────── originator │Name of person, or publication that first identified the feature ────────────────────────────┼─────────────────────────────────────────────────────────────────────────────────────────────────────── compiler │Name of person who entered the feature into the Neotectonic Features Database ────────────────────────────┼─────────────────────────────────────────────────────────────────────────────────────────────────────── date_compiled │Date that feature was entered into the database ────────────────────────────┼─────────────────────────────────────────────────────────────────────────────────────────────────────── last_updated │Date when the record was last updated ────────────────────────────┼─────────────────────────────────────────────────────────────────────────────────────────────────────── updated_by │User id of the person who updated the record ────────────────────────────┼─────────────────────────────────────────────────────────────────────────────────────────────────────── insert_date │Date when the record was created ────────────────────────────┼─────────────────────────────────────────────────────────────────────────────────────────────────────── inserted_by │User id of the person who created the record ────────────────────────────┼─────────────────────────────────────────────────────────────────────────────────────────────────────── quality_assurance_desc │Has the feature been checked by field investigation ────────────────────────────┼─────────────────────────────────────────────────────────────────────────────────────────────────────── access_desc │Open data or GA internal data ────────────────────────────┼─────────────────────────────────────────────────────────────────────────────────────────────────────── sdo_gid_geometry_original │The is an attribute which indicates the type of the geometry in geometry_original field ────────────────────────────┼─────────────────────────────────────────────────────────────────────────────────────────────────────── datum_geometry_original │Spatial datum of lines and points ────────────────────────────┼─────────────────────────────────────────────────────────────────────────────────────────────────────── sdo_gid_geometry │This is an attribute which indicates the type of the geometry in geometry field ────────────────────────────┼─────────────────────────────────────────────────────────────────────────────────────────────────────── age_range │Numerical range of geological timescale name of youngest deformed deposit ────────────────────────────┼─────────────────────────────────────────────────────────────────────────────────────────────────────── dip │Fault dip (often assumed from analogue features) ────────────────────────────┼─────────────────────────────────────────────────────────────────────────────────────────────────────── single_event_displacement │Displacement across a fault accrued in a single earthquake, if known ────────────────────────────┴─────────────────────────────────────────────────────────────────────────────────────────────────────── Neotectonic domains attribute ──────────────┬───────────────────────────────────────────────────────────────────────────────── Attribute name│Description ──────────────┼───────────────────────────────────────────────────────────────────────────────── id │Unique feature identifier for each Neotectonic Domain record ──────────────┼───────────────────────────────────────────────────────────────────────────────── domain │Name of Neotectonic Domain from [http://dx.doi.org/10.1016/j.tecto.2012.07.004] ──────────────┴───────────────────────────────────────────────────────────────────────────────── Neotectonic image attribute ──────────────┬───────────────────────────────────────────────────────────────────────── Attribute name│Description ──────────────┼───────────────────────────────────────────────────────────────────────── blob_link_no │Unique identifier of the record linking an image to a Neotectonic Feature ──────────────┼───────────────────────────────────────────────────────────────────────── feature_id │Unique feature identifier for each Neotectonic Feature record ──────────────┼───────────────────────────────────────────────────────────────────────── image_number │Automatically assigned unique image number ──────────────┼───────────────────────────────────────────────────────────────────────── source_name │Image file name ──────────────┼───────────────────────────────────────────────────────────────────────── name │Display name of image ──────────────┼───────────────────────────────────────────────────────────────────────── caption │Descriptive image caption ──────────────┼───────────────────────────────────────────────────────────────────────── inserted_by │User id of the person who created the record ──────────────┼───────────────────────────────────────────────────────────────────────── insert_date │Date when the record was created ──────────────┼───────────────────────────────────────────────────────────────────────── updated_by │User id of the person who updated the record ──────────────┼───────────────────────────────────────────────────────────────────────── update_date │Date when the record was last updated ──────────────┼───────────────────────────────────────────────────────────────────────── image │Neotectonic Image uploaded as a file (pdf, jpg etc) ──────────────┴───────────────────────────────────────────────────────────────────────── Contact Geoscience Australia, [clientservices@ga.gov.au]