- Title
- LH_helium-isotope
- License
- CC BY 4.0 (CC BY 4.0)
-
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+ For more info see https://creativecommons.org/licenses/by/4.0/. - Abstract
Magmatic volatiles can be considered as the surface fingerprint of active volcanic systems, both during periods of quiescent and eruptive volcanic activity. The spatial variability of gas emissions at Earth’s surface is a proxy for structural discontinuities in the subsurface of volcanic systems. We conducted extensive and regular spaced soil gas surveys within the Los Humeros geothermal field to improve the understanding of the structural control on fluid flow.
- Type
- Vector Data
- Keywords
- Los Humeros , analysis , helium isotope
- Category
- Geochemical
- geochemical analysis, geochemical maps
- Regions
- Mexico
- Owner
- eugenio
- Maintenance Frequency
- There Are No Plans To Update The Data
- Edition
- 1
- Purpose
Surveys at different scales were performed with the aim to identify areas of increased gas emissions on reservoir scale, their relation to unknown/knows v...
- Language
- English
- Data Quality
- To further constrain the origin of gas emissions, six helium samples were taken from selected sites to determine the 3He/4He ratios. Samples were taken on steam vents to reduce the contribution of 4He from ambient air by placing a funnel on the outlet of the steam vent, which was connected via a flexible tube to a 40 cm copper pipe. If steam flow was insufficient, gas was aspirated with a hand pump for about two minutes. Metal clamps were fixed to each end of the copper tube and tightly closed for a safe storage of the gas. Helium samples were analyzed with a VG-5400mass spectrometer. Results were normalized to the air ratio (R/RA = 1.386 × 10−6).
- Supplemental Information
The combined processing of CO2 efflux and carbon/helium isotopes facilitated the detection of permeable structural segments with a connection to the deep.
- Spatial Representation Type
- vector data is used to represent geographic data
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