kˈɑːlks lˈiːv klˈɪɹ ˈɛvɪdəns ɪnðə fˈɔːɹm ʌv plˈʌktbˈɛdɹɑːk pˈɪts, kˈɔːld ɹˈɑːkkˈʌt bˈeɪsənz ɔːɹ kˈɑːlk lˈeɪks ænd dˈaʊnstɹiːm dᵻpˈɑːzɪts ʌv ɡɹˈævəlsəpˈoːɹɾᵻd blˈɑːks ðæt ʃˈoʊ pɚkˈʌʃən bˌʌt nˈoʊ ɹˈaʊndɪŋ.
Kolks leave clear evidence in the form of plucked-bedrock pits, called rock-cut basins or kolk lakes and downstream deposits of gravel-supported blocks that show percussion but no rounding.