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By using H$\alpha$, He I 10830, EUV and soft X-ray (SXR) data, we examined afilament eruption that occurred on a quiet-sun region near the center of thesolar disk on 2006 January 12, which disturbed a sigmoid overlying the filamentchannel observed by the $\emph{GOES-12}$ SXR Imager (SXI), and led to theeruption of the sigmoid. The event was associated with a partial halo coronalmass ejection (CME) observed by the Large Angle and Spectrometric Coronagraphs(LASCO) on board the Solar and Heliospheric Observatory ($\emph{SOHO}$), andresulted in the formation of two flare-like ribbons, post-eruption coronalloops, and two transient coronal holes (TCHs), but there were no significantlyrecorded $\emph{GOES}$ or H$\alpha$ flares corresponding to the eruption. Thetwo TCHs were dominated by opposite magnetic polarities and were located on thetwo ends of the eruptive sigmoid. They showed similar locations and shapes inHe I 10830, EUV and SXR observations. During the early eruption phase,brightenings first appeared on the locations of the two subsequent TCHs, whichcould be clearly identified on He I 10830, EUV and SXR images. This eruptionevent could be explained by the magnetic flux rope model, and the two TCHs werelikely to be the feet of the flux rope.

Formation of Transient Coronal Holes during the Eruption of a Quiescent Filament and its Overlying Sigmoid