Analisis Umur Pelapukan Sampel Tan ah Sekitar Goa Seropan - Yogyakarta

Abstract

Abstrak

Telah dilakukan analisis "C sampel tanah yang berasal dan sckiiar Seropan Gunung Kidul, Yogyakarta. Analisis "C lerhadap sampel tersebul dilakukan dcngan cujuan mengetahui umur pelapukan dan laju pelapukan batuan gamping menjadi tanah. Analisis dilakukan menggunakan teknik pcnanggalan karbon. di mana dapal diketahtii aktivitas dan umur pada tiap lapisan. Pengambilan sampel dilakukan pada kedalaman 10 cm. 20 cm dan 30 cm masing-masing sebanyak' 1 kg. Hasil analisis menunjukkan bahwa umur pelapukan tanah pada masing-masing kedalaman tcrscbui sebesar 3100 ± 15, 3860 ± 15 dan 5000 ± 20. Dari hasil umur dan jarak antar lapisan, maka diketahiii bahwa taju pembentukan tanahnya sebesar 0,114 mm/tahun.

Kata Kunci: kronologi, umur pelapukan, analisis "C, tanah, Seropan

Abstract,

The analyzes "C have been carried from soil samples around Seropan Gunungkidul, Yogyakarta. "C analysis of the samples was carried out in order to know the age of weathering and the rate of weathering of limestone rocks into soil. Analyses were performed using carbon dating techniques, which can be known activity and age on each layer. Sampling was conducted at a depth of 10 cm, 20 cm and 30 cm respectively as much as I kg. The analysis showed that the age of the weathering of land on each of these depths of 3100 ± 75, 3860 ± IS and 5000 ± 20. From the age and the distance between the layers, it is known that the rate of soil formation ofO. 114 mm /year.

Key words: chronology, age wethering, analyzes "C. soil. Sero