Geological Technicians, Except Hydrologic Technicians
Geological technicians assist scientists and engineers in collecting and analyzing data about Earth's natural resources, including metals, minerals, gas, coal, and petroleum. They operate electronic, sonic, and nuclear measuring instruments in laboratories and field sites, analyze rock samples and drill cuttings, and record measurements like pressure and temperature. Most work for mining companies, oil and gas exploration firms, or geological consulting organizations.
Four short assessments and your background, scored against geological technicians, except hydrologic technicians and 13,000 other careers — with the reasons. Free.
A day in the work
A geological technician's week typically involves operating specialized measuring equipment in the field or lab, recording data from drilling operations, and analyzing mud and rock samples under microscopes. They chart findings on graphs and spreadsheets, document pressure and temperature readings, and prepare samples for further analysis. Technicians may work at drill sites, mining operations, or laboratory facilities, often following established protocols and procedures to ensure data accuracy and safety compliance.
Who this work suits
Holland code RCI. Realistic work is hands-on, practical work with tools, machines or the outdoors. Aptly’s interest assessment scores you on the same six scales.
You excel at this work if you're detail-oriented and systematic, preferring to follow established procedures and standards rather than create new approaches. You're drawn to practical problem-solving with concrete tools and measurable results, and you're comfortable working with technical equipment and scientific data in both structured and field environments.
What it takes
Preparation: Considerable preparation (most need a bachelor’s degree and several years of experience).
Skills that matter most
Knowledge areas
Pay by state
| State | 25th pct | Median | 75th pct | Employed |
|---|---|---|---|---|
| Maryland | $84,040 | $102,090 | $102,090 | 30 |
| Indiana | $74,450 | $79,290 | $85,960 | — |
| Alaska | $57,260 | $76,090 | $129,790 | 70 |
| Nevada | $61,740 | $73,700 | $84,410 | 260 |
| California | $53,610 | $69,410 | $83,470 | 480 |
| West Virginia | $47,680 | $69,350 | $85,180 | 60 |
| Washington | $54,220 | $63,910 | $63,910 | — |
| Nebraska | $50,290 | $63,160 | $66,800 | — |
| Wyoming | $47,750 | $63,070 | $80,360 | 90 |
| Tennessee | $55,690 | $63,050 | $71,930 | 110 |
| Colorado | $49,630 | $61,780 | $95,790 | 90 |
| Massachusetts | $54,270 | $61,630 | $78,900 | 40 |
All 35 states
Certifications people in this field hold
- NSPS - THSOA Certified Hydrographer — National Society of Professional Surveyors
- Certified Coal Geologist (CCG) — American Association of Petroleum Geologists
- Certified Petroleum Geophysicist — American Association of Petroleum Geologists
- ArcGIS Desktop Professional 19-001 (EADP) — Environmental Systems Research Institute
- ArcGIS Pro Professional 2201 (EAPP) — Environmental Systems Research Institute
Training
Aptly members see WIOA-approved programs, colleges and certificates near them, with completion and earnings data, on every Path plan.
Related occupations
Four short assessments and your background, scored against geological technicians, except hydrologic technicians and 13,000 other careers — with the reasons. Free.
O*NET-SOC 19-4043.00 · O*NET OnLine. Pay: BLS OEWS May 2025, annual, U.S. Employment counts are national.