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A method for identifying and locating palaeochannels covered by basalt

A technology of identification and positioning, basalt, applied in the field of uranium metallogenic prediction, can solve problems such as the inability to identify and locate ancient river channels, and achieve the effects of environmental identification and positioning, avoiding vegetation damage, and high starting point

Active Publication Date: 2022-01-07
BEIJING RES INST OF URANIUM GEOLOGY
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to address the deficiencies of the prior art, and provide a method for identifying and locating paleo-channels covered by basalt, which is used to solve the technical problem in the prior art that it is impossible to accurately identify and locate paleo-channels covered by basalt

Method used

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  • A method for identifying and locating palaeochannels covered by basalt

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Experimental program
Comparison scheme
Effect test

Embodiment

[0067] Step 1: Find out the temporal and spatial distribution characteristics of surface basalts, and determine the possible distribution direction of paleo-channels

[0068] Step 1.1: Identify the temporal and spatial distribution characteristics of surface basalts

[0069] Collect a 1:200,000 geological and mineral map of the study area, delineate the area covered by surface basalt on the map; determine the age of basalt eruption on the comprehensive stratigraphic columnar profile; comprehensively find out the temporal and spatial distribution characteristics of surface basalt.

[0070] Step 1.2: Determine the possible distribution direction of paleochannels under basalt cover

[0071] On the 1:200,000 geological and mineral map, find out the distribution characteristics of the eruptive basalt craters, and combine the temporal and spatial distribution characteristics of the surface basalts found in step 1.1 to determine the distribution trend of the craters and the main axis...

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Abstract

The invention belongs to the technical field of uranium mineralization prediction, and specifically relates to a method for identifying and locating paleo-channels covered by basalt. Step 1: find out the temporal and spatial distribution characteristics of surface basalts, and determine the possible distribution direction of paleo-channels; Step 1.1: find out the surface Spatial and temporal distribution characteristics of basalt; step 1.2: determine the possible distribution direction of paleo-channels covered by basalt; step 2: determine the pre-selected area of ​​paleo-channel distribution; step 2.1: find out the structure, vegetation zone and water system zone of basalt-covered area; step 2.2: Determine the pre-selected area of ​​paleo-channel distribution; Step 3: Identification and positioning of paleo-channels covered by basalt; Step 3.1: Acquisition of airborne transient electromagnetic data; Step 3.2: Identify and locate paleo-channels covered by basalt; Step 3.3: Determine the location of paleo-channels horizon; step 3.4: find out the scale of paleo-channels; step 4: drill to verify paleo-channels.

Description

technical field [0001] The invention belongs to the technical field of uranium mineralization prediction, and in particular relates to a method for identifying and locating paleo-channels covered by basalt. Background technique [0002] Paleochannel-type uranium deposits covered by basalt are an important subtype of sandstone-type uranium deposits. They have the characteristics of shallow burial depth, high grade, and economical mining. They have received great attention from foreign uranium geologists. 22 uranium deposits and 136 ore points of this subtype have been discovered in China. In my country's Tengchong Basin, the Longchuanjiang paleo-channel uranium deposit covered by basalt has also been discovered, showing a good prospect for sandstone-type uranium deposits. However, in the process of identifying and locating paleo-channel-type uranium deposits, the paleo-channel is shielded by the overlying basalt due to the basalt subtype of ore-forming geological body. In ad...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V3/08G01V3/38
CPCG01V3/083G01V3/38Y02A90/30
Inventor 李子颖刘武生李西得余长发汪硕
Owner BEIJING RES INST OF URANIUM GEOLOGY
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