Geology Magnetostratigraphy Polarity Lookup
Resolve independently verified named polarity chron/edition evidence, not geomagnetic-age assignment without reference. Exact independently verified location/jurisdiction/method/edition reference key, not a live database. 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
Magnetostratigraphic polarity references tie named records to a particular stratigraphic or timescale context.
Magnetostratigraphic polarity references tie named records to a particular stratigraphic or timescale context.1
An exact match to supplied text does not correlate a section or establish its age independently. Use this tool to retrieve the exact caller-supplied record and any source label returned with it.
When to use Geology Magnetostratigraphy Polarity Lookup
Use this tool to retrieve the exact caller-supplied record and any source label returned with it. Establish the measurement units, sampled interval, calibration or model edition and geological assumptions before entering data.
How to use Geology Magnetostratigraphy Polarity Lookup and understand its results
- Establish the measurement units, sampled interval, calibration or model edition and geological assumptions before entering data.
- Enter callerVerifiedPolarityChronKeys, callerVerifiedPolarityChronNotices, queryPolarityChronKey, using the field meanings and rules below, then run the tool.
- Read matchedCallerNotice. 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 |
|---|---|---|---|
| callerVerifiedPolarityChronKeys | Caller verified polarity chron keys; caller assertion or measurement requiring independent evidence | list of string | Required |
| callerVerifiedPolarityChronNotices | Caller verified polarity chron notices; caller assertion or measurement requiring independent evidence | list of string | Required |
| queryPolarityChronKey | Query polarity chron key | string | Required |
Enter nonempty aligned reference keys and texts. Keys must be distinct, nonblank strings of at most 128 UTF-16 units, and texts must be nonblank. Matching uses exact case-sensitive string equality, without trimming, search or approximate matching. The tool finds the query key and returns the text at that position unchanged; an unknown key fails. There is no installed complete reference catalog or live retrieval.
matchedText=texts[indexOfExact(queryKey,keys)] Use the exact units, boundary rules, ordering and missing-evidence conventions above.
| Output field | Meaning | Value type |
|---|---|---|
| matchedCallerNotice | Caller notice text at the exact matched key, returned unchanged | string |
{
"input": {
"callerVerifiedPolarityChronKeys": [
"site-a/edition-a",
"site-a/edition-b"
],
"callerVerifiedPolarityChronNotices": [
"caller reference a",
"caller reference b"
],
"queryPolarityChronKey": "site-a/edition-b"
},
"output": {
"matchedCallerNotice": "caller reference b"
}
}Limitations and assumptions
Success establishes a match in the supplied reference list. The tool does not obtain or authenticate the reference, confirm its contextual applicability, or validate the historical or cultural claims in the returned text.
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 Varve Thickness Calculator for this related task: A varve is an independently identified annual sedimentary layer or layer pair under the adopted counting convention.
Use Geology Biostratigraphy Zone Thickness Calculator when its separate inputs and assumptions fit the question: A biozone thickness can be bounded when both its base and top have independent coordinate intervals.
References
Similar or alternative tools
- Geology Varve Thickness Calculator
A varve is an independently identified annual sedimentary layer or layer pair under the adopted counting convention.
- Geology Biostratigraphy Zone Thickness Calculator
A biozone thickness can be bounded when both its base and top have independent coordinate intervals.