Geochemical Analysis of Sm-Nd Isotopes
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This table contains data from the 'Geological Survey of Finland' website. It includes information about rock samples and their isotopic analysis. The data is sourced from Finland (ISO country code: 'fi'). The table has multiple columns including '_extract_date', '_row_number', 'gml_id', 'objectid', 'sample_anal', 'map_sheet', 'northing', 'easting', 'ykj_north_original', 'ykj_east_original', 'location_mineral', 'rock_type', 'sm_ppm', 'nd_ppm', 'sm147_nd144', 'error_estimate_two_sigma', 'nd143_nd144', 'error_estimate_two_sigma2', 'age_ma', 'epsilon_nd_age', 'model_age_ma', 'domain', 'reference', 'sort', 'model_age_ma_legend', 'age_u_pb_ma', 'age_error', 'comments', 'group_col', 'formation', 'geom_geojson', 'geom_geotext', 'geom_type', 'geom_centroid', 'geom_center_x', 'geom_center_y', 'geom'. The data in this table can be utilized for data analytics purposes, such as analyzing the distribution of different rock types, identifying mineral locations, studying isotopic compositions, estimating ages, and exploring geological formations.
Field Descriptions
| Name |
Data type |
Description |
| _extract_date | date | The date when the data was extracted. |
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| _row_number | long | The sequential number of the row. |
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| gml_id | string | The unique identifier for the GML. |
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| objectid | int | The unique identifier for the object. |
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| sample_anal | string | The type of sample analysis. |
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| map_sheet | int | The map sheet associated with the data. |
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| northing | int | The northing coordinate. |
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| easting | int | The easting coordinate. |
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| ykj_north_original | int | The original ykj north coordinate. |
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| ykj_east_original | int | The original ykj east coordinate. |
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| location_mineral | string | The mineral location. |
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| rock_type | string | The type of rock. |
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| sm_ppm | float | The concentration of samarium (Sm) in parts per million (ppm). |
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| nd_ppm | float | The concentration of neodymium (Nd) in parts per million (ppm). |
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| sm147_nd144 | int | The isotopic ratio of Sm-147 to Nd-144. |
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| error_estimate_two_sigma | int | The error estimate at a 95% confidence level. |
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| nd143_nd144 | int | The isotopic ratio of Nd-143 to Nd-144. |
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| error_estimate_two_sigma2 | int | Another error estimate at a 95% confidence level. |
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| age_ma | int | The age in millions of years. |
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| epsilon_nd_age | int | The epsilon value for the Nd age. |
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| model_age_ma | int | The model age in millions of years. |
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| domain | string | The domain of the data. |
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| reference | string | The reference source. |
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| sort | string | The sorting order of the data. |
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| model_age_ma_legend | int | The model age in millions of years based on the legend. |
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| age_u_pb_ma | int | The age in millions of years based on uranium-lead (U-Pb) dating. |
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| age_error | int | The error value for the age based on U-Pb dating. |
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| comments | string | Additional comments or notes. |
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| group_col | string | The grouping column. |
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| formation | string | The formation associated with the data. |
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| geom_geojson | string | The geometry in GeoJSON format. |
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| geom_geotext | string | The geometry in Geotext format. |
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| geom_type | string | The type of geometry. |
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| geom_centroid | string | The centroid of the geometry. |
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| geom_center_x | double | The x-coordinate of the center of the geometry. |
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| geom_center_y | double | The y-coordinate of the center of the geometry. |
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| geom | binary | The geometry data. |
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