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Survey Details for CRMRTGL443 - 2026-06-05

CRMRTGL443

Geological Landscape

Cors Farlais

Carmarthenshire

2008-12-30

  • Level 1: Mountain and upland valley
  • Level 2: Upland and mountain river and stream
  • Level 3: Other

Monitoring

Q1 - Date of monitoring?

  • No Answer

Q1a - Monitoring undertaken by

  • No Answer

Q1b - Has this record been updated following monitoring work?

  • No Answer

Q1c - Change indicated by

  • No Answer

Q1d - What has changed?

  • No Answer

Q1e - Has the information ever been verified in the field?

  • No

Q2 - Does this area have a special or functional link with an adjacent area?

  • No

Description

Q3 - If Classification is "Other", specify here

  • Upland wetland or other depositional basin

Q4 - What is the geographical and topographical character of this area?

  • Broad depression at the head of the valley system of Afon Morlais (Aspect Area 461) and surrounded by bedrock massifs on 3 sides. Glacial clay fill with development of peat bog / rhos pasture (Quaternary, Pleistocene-Holocene).

Q4a - Where bedrock dominated, what is the dominant bedrock type?

  • No Answer

Q4b - Where bedrock dominated, what is the age that characterises the aspect area?

  • No Answer

Q4c - Where bedrock dominated, what is the major rock lithogy (-ies)?

  • No Answer

Q4d - Where drift dominated, what is the dominant drift deposit?

  • Alluvial
  • Glacial

Q4e - Where drift dominated, what is the major sediment that characterises the area?

  • Boulder clay/till
  • Other

Q5 - What is the characteristic Level 3 component of the area?

  • Other
    • Upland wetland or other depositional basin

Q6 - Which of the following is a significant contributor to the geological character of the area?

  • Superficial deposits
    • Glacial till with peat [QUATERNARY: PLEISTOCENE-HOLOCENE].
  • Active processes
    • Stream, peat formation
  • Past processes
    • Glacial

Q7 - What additional subsidiary Level 3 components are notable?

  • No Answer

Q8 - What Level 4 components are notable in this area?

  • Peat bog
  • Former lake (e.g. silted up)

Q9 - What active geological and geomorphological processes are significant in this area?

  • Stream,
  • peat formation
  • Empty value

Q10 - Are there components of significant hydrological importance?

  • Yes
    • Stream, peat formation

Q11 - Are there any pedological processes that are significant in the area or have had a landscape forming effect?

  • Yes
    • peat formation

Q12 - Is there current mineral extraction?

  • No

Q13 - Has there been mineral extraction in the past?

  • Not known

Q14 - Are there SSSI/GCR sites here?

  • No

Q15 - Are there geological SINC, 2nd tier, or RIGS sites in the area?

  • Yes
    • Cors Farlais RIGS (SN677348) [Scientific: Quaternary | Geomorphology]

Condition

Q16 - Value

  • High
    • Includes RIGS features of at least regional importance.

Q17 - Condition

  • Good
    • Rural area with no significant development.

Q18 - Trend

  • Constant
    • Rural area with no significant development.

Recommendations

Q19 - Existing management

  • Generally Appropriate

Q20 - Existing management remarks:

  • Rural area with no significant development.

Q21 - Principal management recommendations

  • Ensure that no features or natural systems of geological or geomorphological significance in the area are lost or damaged (e.g. due to development or forestry). Ensure that RIGS are safeguarded using Local Plan policies and constraint mapping.

Q22 - Guideline

  • Long Term
    • Ensure that no features or natural systems of geological or geomorphological significance in the area are lost or damaged (e.g. due to development or forestry).
  • Long Term
    • Ensure that RIGS are safeguarded using Local Plan policies and constraint mapping.

Tolerance To Change

Q23 - Are there any significant threats to the current integrity and condition of the Earth Heritage features of the area?

  • Not known

Aspect Area Boundary

Q24 - To what level was this information site-surveyed?

  • Level 3

Q25 - At 1:10,000, how much of the Aspect Area boundary is precise?

  • Most
    • Aspect Area boundaries surveyed at 1:10,000 using aerial photographs, mapped at 1:25,000.

Q26 - What baseline information source was used for Aspect Area boundary mapping?

  • Other
    • 1:50,000 British Geological Survey maps, 1:10,000 aerial photographs (as stereo pairs), OS 1:25,000 Landranger topographical maps.

Q27 - If OS Data was used, what was the scale?

  • 1:25,000

Q28 - What is the justification for the Aspect Area boundaries?

  • Break of slope at edge of drift filled depression or valley systems and base of valley sides / escarpment above.

Evaluation

Q29 - Evaluation Criteria: Research Value

  • High
    • Includes RIGS features of at least regional importance.

Q29a - Evaluation Criteria: Educational Value

  • High
    • Includes RIGS features of at least regional importance.

Q30 - Evaluation Criteria: Historical Value

  • High
    • Includes RIGS features of at least regional importance.

Q31 - Evaluation Criteria: Rarity / Uniqueness

  • High
    • Includes RIGS features of at least regional importance.

Q32 - Evaluation Criteria: Classic Example

  • High
    • Includes RIGS features of at least regional importance.

Q33 - Evaluation Criteria: Overall Evaluation

  • High
    • Includes RIGS features of at least regional importance.

Q34 - Justification of overall evaluation

  • Includes RIGS features of at least regional importance.

Bibliography

Q35 - Sources and additional assessments

  • ORDNANCE SURVEY 1999a, Explorer Map 187 (1:25, 000). ORDNANCE SURVEY 2003a, Explorer Map 186 (1:25, 000). BRITISH GEOLOGICAL SURVEY 2008, Sheet 212, 1:50,000 Geological Series.

Assessment

Q36 - Additional Assessments

  • None

Q37 - Additional Comments

  • Additional Level 4 features include: Stream; Marsh/bog/fen