Geology Cooling Rate From Age Vs Closure Temp Calculator
Fit temperature against age-before-present across matched closure systems; positive slope corresponds forward-time cooling, negative apparent cooling retained, no causal thermal history. Caller independently establishes matching units, evidence, method edition and applicability; output is not compliance, diagnosis, work-safety approval, geological identity or validated hazard prediction.
Description
Fitting closure temperature against age gives a signed slope in temperature per age unit.
Fitting closure temperature against age gives a signed slope in temperature per age unit.1
When ages are measured before present, that slope's sign must be interpreted using the declared time-axis convention. Use this tool to calculate cooling rate from age vs closure temp from the supplied measurements and assumptions.
When to use Geology Cooling Rate From Age Vs Closure Temp Calculator
Use this tool to calculate cooling rate from age vs closure temp from the supplied measurements and assumptions. Establish the measurement units, sampled interval, calibration or model edition and geological assumptions before entering data.
How to use Geology Cooling Rate From Age Vs Closure Temp Calculator and understand its results
- Establish the measurement units, sampled interval, calibration or model edition and geological assumptions before entering data.
- Enter closureAgesMa, closureTemperaturesC, using the field meanings and rules below, then run the tool.
- Read coolingRateCPerMa, fitRSquared. Interpret the fields using their units, signs and evidence conventions below.
- If input validation fails, correct the reported field and run again. Before applying the result, check reference scope, model assumptions and any missing evidence or placeholder values.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| closureAgesMa | Closure ages ma | list of number | Required |
| closureTemperaturesC | Closure temperatures c | list of number | Required |
Enter at least two aligned nonnegative ages in Ma and finite closure temperatures in Celsius. Fit temperature against age by ordinary least squares with nonzero age variance. Return the signed slope in C/Ma and R² without reversing the time axis; interpret age-before-present independently.
temperatureC=intercept+slope×ageMa; returnedRate=slope Use the exact units, boundary rules, ordering and missing-evidence conventions above.
| Output field | Meaning | Value type |
|---|---|---|
| coolingRateCPerMa | Cooling Rate C Per Ma; follow the units, sign, ordering and evidence convention stated above | number |
| fitRSquared | Fit R Squared; follow the units, sign, ordering and evidence convention stated above | number |
{
"input": {
"closureAgesMa": [
1,
2,
3
],
"closureTemperaturesC": [
100,
200,
300
]
},
"output": {
"coolingRateCPerMa": 100,
"fitRSquared": 1
}
}Limitations and assumptions
When ages are measured before present, that slope's sign must be interpreted using the declared time-axis convention. Interpretation depends on the units, sampling scope and exact model described above.
All listed fields require explicit values. Unexpected fields, incorrect types, nonfinite numbers and sparse evidence arrays fail validation; the specific bounds and alignment requirements are stated above. Extremely large inputs or outputs can also be rejected. An input error is distinct from a successful result reporting false, no matches or missing evidence.
Alternative or Complementary methods
Use Geology Exhumation Rate From Cooling Rate Calculator for this related task: A cooling rate divided by an assumed thermal gradient gives a conditional exhumation-rate scale.
Use Geology Chlorite Geothermometer Calculator when its separate inputs and assumptions fit the question: Chlorite thermometry uses a specified compositional calibration with its own applicability limits.
References
Similar or alternative tools
- Geology Exhumation Rate From Cooling Rate Calculator
A cooling rate divided by an assumed thermal gradient gives a conditional exhumation-rate scale.
- Geology Chlorite Geothermometer Calculator
Chlorite thermometry uses a specified compositional calibration with its own applicability limits.